diff --git a/arch/arm/src/Makefile b/arch/arm/src/Makefile
index 32507ba297..2d7ac3f18e 100644
--- a/arch/arm/src/Makefile
+++ b/arch/arm/src/Makefile
@@ -194,7 +194,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile chip$(DELIM)Make.defs $(SRCS)
+.depend: Makefile chip$(DELIM)Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/avr/src/Makefile b/arch/avr/src/Makefile
index 43dfcd80f2..05890e2547 100644
--- a/arch/avr/src/Makefile
+++ b/arch/avr/src/Makefile
@@ -140,7 +140,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/hc/src/Makefile b/arch/hc/src/Makefile
index a06af91c8f..0712eeeca8 100644
--- a/arch/hc/src/Makefile
+++ b/arch/hc/src/Makefile
@@ -155,7 +155,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/mips/src/Makefile b/arch/mips/src/Makefile
index 899c9a2634..8b0df88f83 100644
--- a/arch/mips/src/Makefile
+++ b/arch/mips/src/Makefile
@@ -138,7 +138,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/misoc/src/Makefile b/arch/misoc/src/Makefile
index d4f4507a2a..e81fe39bdf 100644
--- a/arch/misoc/src/Makefile
+++ b/arch/misoc/src/Makefile
@@ -141,7 +141,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/or1k/src/Makefile b/arch/or1k/src/Makefile
index 6564902990..cf774eb2e5 100644
--- a/arch/or1k/src/Makefile
+++ b/arch/or1k/src/Makefile
@@ -181,7 +181,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile chip$(DELIM)Make.defs $(SRCS)
+.depend: Makefile chip$(DELIM)Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/renesas/src/Makefile b/arch/renesas/src/Makefile
index 15a64c2a0f..7bf8c5fc8e 100644
--- a/arch/renesas/src/Makefile
+++ b/arch/renesas/src/Makefile
@@ -149,7 +149,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/risc-v/src/Makefile b/arch/risc-v/src/Makefile
index eba63324c8..dd43dc3d2f 100644
--- a/arch/risc-v/src/Makefile
+++ b/arch/risc-v/src/Makefile
@@ -184,7 +184,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index ed9e2ce893..06170ecae2 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -321,7 +321,7 @@ export_startup: board/libboard$(LIBEXT) up_head.o $(HOSTOBJS)
 
 # Dependencies
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
diff --git a/arch/x86/src/Makefile b/arch/x86/src/Makefile
index a2953f7d7c..31ab9e58cd 100644
--- a/arch/x86/src/Makefile
+++ b/arch/x86/src/Makefile
@@ -153,7 +153,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/x86_64/src/Makefile b/arch/x86_64/src/Makefile
index 1219dc780b..65bc34127a 100644
--- a/arch/x86_64/src/Makefile
+++ b/arch/x86_64/src/Makefile
@@ -148,7 +148,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/xtensa/src/Makefile b/arch/xtensa/src/Makefile
index 7a52fcd6a3..fd6111cc45 100644
--- a/arch/xtensa/src/Makefile
+++ b/arch/xtensa/src/Makefile
@@ -139,7 +139,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Dependencies
 
-.depend: Makefile chip/Make.defs $(SRCS)
+.depend: Makefile chip/Make.defs $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(BOARDMAKE),y)
 	$(Q) $(MAKE) -C board TOPDIR="$(TOPDIR)" depend
 endif
diff --git a/arch/z16/src/Makefile b/arch/z16/src/Makefile
index c73e96ed17..669d3229e6 100644
--- a/arch/z16/src/Makefile
+++ b/arch/z16/src/Makefile
@@ -109,7 +109,7 @@ nuttx$(EXEEXT): $(HEAD_OBJ) board/libboard$(LIBEXT) nuttx.linkcmd
 	@echo "LD:  nuttx$(EXEEXT)"
 	$(Q) $(LD) $(LDFLAGS)
 
-.depend: Makefile chip/Make.defs $(DEPSRCS)
+.depend: Makefile chip/Make.defs $(DEPSRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
 	$(Q) if exist board$(DELIM)Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" depend )
 else
diff --git a/arch/z80/src/Makefile.sdccl b/arch/z80/src/Makefile.sdccl
index bc328d944d..ea8c3f80bf 100644
--- a/arch/z80/src/Makefile.sdccl
+++ b/arch/z80/src/Makefile.sdccl
@@ -207,7 +207,7 @@ export_startup: board/libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Build dependencies
 
-.depend: Makefile asm_mem.h chip/Make.defs $(DEPSRCS)
+.depend: Makefile asm_mem.h chip/Make.defs $(DEPSRCS) $(TOPDIR)$(DELIM).config
 	$(Q) if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
diff --git a/arch/z80/src/Makefile.sdccw b/arch/z80/src/Makefile.sdccw
index 016023f843..f7f0141997 100644
--- a/arch/z80/src/Makefile.sdccw
+++ b/arch/z80/src/Makefile.sdccw
@@ -201,7 +201,7 @@ export_startup: board\libboard$(LIBEXT) $(STARTUP_OBJS)
 
 # Build dependencies
 
-.depend: Makefile asm_mem.h chip\Make.defs $(DEPSRCS)
+.depend: Makefile asm_mem.h chip\Make.defs $(DEPSRCS) $(TOPDIR)$(DELIM).config
 	$(Q) if exist board\Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" depend )
 	$(Q) $(MKDEP) --dep-path chip --dep-path common "$(CC)" -- $(CFLAGS) -- $(DEPSRCS) >Make.dep
 	$(Q) touch $@
diff --git a/arch/z80/src/Makefile.zdsiil b/arch/z80/src/Makefile.zdsiil
index 4ed5530c44..cf190c7305 100644
--- a/arch/z80/src/Makefile.zdsiil
+++ b/arch/z80/src/Makefile.zdsiil
@@ -137,7 +137,7 @@ nuttx$(EXEEXT): $(HEAD_OBJ) board$(DELIM)libboard$(LIBEXT) nuttx.linkcmd
 	@echo "LD:  nuttx$(EXEEXT)"
 	$(Q) "$(LD)" $(LDFLAGS)
 
-.depend: Makefile chip$(DELIM)Make.defs $(DEPSRCS)
+.depend: Makefile chip$(DELIM)Make.defs $(DEPSRCS) $(TOPDIR)$(DELIM).config
 	$(Q) if [ -e board$(DELIM)Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
diff --git a/arch/z80/src/Makefile.zdsiiw b/arch/z80/src/Makefile.zdsiiw
index e609ffd425..4dcfec7348 100644
--- a/arch/z80/src/Makefile.zdsiiw
+++ b/arch/z80/src/Makefile.zdsiiw
@@ -126,7 +126,7 @@ nuttx$(EXEEXT): $(HEAD_OBJ) board$(DELIM)libboard$(LIBEXT) nuttx.linkcmd
 	@echo "LD:  nuttx$(EXEEXT)"
 	$(Q) "$(LD)" $(LDFLAGS)
 
-.depend: Makefile chip$(DELIM)Make.defs $(DEPSRCS)
+.depend: Makefile chip$(DELIM)Make.defs $(DEPSRCS) $(TOPDIR)$(DELIM).config
 	$(Q) if exist board$(DELIM)Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" depend )
 	$(Q) $(MKDEP) --dep-path chip --dep-path common "$(CC)" -- $(CFLAGS) -- $(DEPSRCS) >Make.dep
 	$(Q) touch $@
diff --git a/audio/Makefile b/audio/Makefile
index 3a5c3706d0..9fcabcdc47 100644
--- a/audio/Makefile
+++ b/audio/Makefile
@@ -69,7 +69,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/binfmt/Makefile b/binfmt/Makefile
index fb23f2fd51..23dcdab4f4 100644
--- a/binfmt/Makefile
+++ b/binfmt/Makefile
@@ -81,7 +81,7 @@ $(BINFMT_COBJS): %$(OBJEXT): %.c
 $(BIN): $(BINFMT_OBJS)
 	$(call ARCHIVE, $@, $(BINFMT_OBJS))
 
-.depend: Makefile $(BINFMT_SRCS)
+.depend: Makefile $(BINFMT_SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(BINFMT_SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/boards/Board.mk b/boards/Board.mk
index 1a53161a26..7e642d24d9 100644
--- a/boards/Board.mk
+++ b/boards/Board.mk
@@ -112,7 +112,7 @@ ifneq ($(CXXOBJS),)
 	$(call ARCHIVE, $@, $(CXXOBJS))
 endif
 
-.depend: Makefile $(SRCS) $(CXXSRCS) $(RCSRCS)
+.depend: Makefile $(SRCS) $(CXXSRCS) $(RCSRCS) $(TOPDIR)$(DELIM).config
 ifneq ($(ZDSVERSION),)
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 else
diff --git a/boards/Makefile b/boards/Makefile
index d8019632ef..e6ef740f03 100644
--- a/boards/Makefile
+++ b/boards/Makefile
@@ -99,7 +99,7 @@ $(CXXOBJS): %$(OBJEXT): %.cxx
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 ifneq ($(SRCS),)
 	$(Q) $(MKDEP) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 endif
diff --git a/crypto/Makefile b/crypto/Makefile
index 394986a6da..fd663fe816 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -90,7 +90,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(CONFIG_CRYPTO),y)
 	$(Q) $(MKDEP) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 endif
diff --git a/drivers/Makefile b/drivers/Makefile
index 8bd419b059..dd695b82af 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -118,7 +118,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/fs/Makefile b/fs/Makefile
index 5eb6e8bc41..786c94967f 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -98,7 +98,7 @@ $(BIN):	$(OBJS)
 
 context::
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/graphics/Makefile b/graphics/Makefile
index 4f0bafb942..731f68b21c 100644
--- a/graphics/Makefile
+++ b/graphics/Makefile
@@ -124,7 +124,7 @@ $(BIN): $(OBJS)
 
 mklibgraphics: $(BIN)
 
-.depend: gensources Makefile $(SRCS)
+.depend: gensources Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/libs/libc/Makefile b/libs/libc/Makefile
index 230699537c..6d890c30c8 100644
--- a/libs/libc/Makefile
+++ b/libs/libc/Makefile
@@ -154,7 +154,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) --obj-path bin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >bin/Make.dep
 ifneq ($(CONFIG_BUILD_FLAT),y)
 	$(Q) $(MKDEP) --obj-path kbin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) $(KDEFINE) -- $(SRCS) >kbin/Make.dep
diff --git a/libs/libc/zoneinfo/Makefile b/libs/libc/zoneinfo/Makefile
index 50193a86ee..919fdab81f 100644
--- a/libs/libc/zoneinfo/Makefile
+++ b/libs/libc/zoneinfo/Makefile
@@ -118,7 +118,7 @@ context: .tzbuilt romfs
 
 # Create dependencies
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/libs/libdsp/Makefile b/libs/libdsp/Makefile
index 263533853e..9e9999e6a7 100644
--- a/libs/libdsp/Makefile
+++ b/libs/libdsp/Makefile
@@ -65,7 +65,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/libs/libnx/Makefile b/libs/libnx/Makefile
index b581d1c490..8015f61a61 100644
--- a/libs/libnx/Makefile
+++ b/libs/libnx/Makefile
@@ -235,7 +235,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile gensources $(SRCS)
+.depend: Makefile gensources $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) --obj-path bin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >bin/Make.dep
 ifneq ($(CONFIG_BUILD_FLAT),y)
 	$(Q) $(MKDEP) --obj-path kbin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) $(KDEFINE) -- $(SRCS) >kbin/Make.dep
diff --git a/libs/libxx/Makefile b/libs/libxx/Makefile
index 99ac158631..8ad47f109d 100644
--- a/libs/libxx/Makefile
+++ b/libs/libxx/Makefile
@@ -87,7 +87,7 @@ $(BIN):	$(OBJS)
 
 dirlinks::
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CXX)" -- $(CXXFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/mm/Makefile b/mm/Makefile
index a585cd8a9c..729e7b6e9f 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -81,7 +81,7 @@ endif
 
 # Dependencies
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) --obj-path bin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >bin/Make.dep
 ifneq ($(CONFIG_BUILD_FLAT),y)
 	$(Q) $(MKDEP) --obj-path kbin --obj-suffix $(OBJEXT) $(DEPPATH) "$(CC)" -- $(CFLAGS) $(KDEFINE) -- $(SRCS) >kbin/Make.dep
diff --git a/net/Makefile b/net/Makefile
index f8ffe85aea..db40ad6398 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -92,7 +92,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 ifeq ($(CONFIG_NET),y)
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 endif
diff --git a/openamp/Makefile b/openamp/Makefile
index a4cf9b87b4..d216c74831 100644
--- a/openamp/Makefile
+++ b/openamp/Makefile
@@ -62,7 +62,7 @@ $(BIN): $(OBJS)
 
 dirlinks::
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/pass1/Makefile b/pass1/Makefile
index d21ccfd864..27704f6f2f 100644
--- a/pass1/Makefile
+++ b/pass1/Makefile
@@ -58,7 +58,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/sched/Makefile b/sched/Makefile
index 4d15730497..2ac0743056 100644
--- a/sched/Makefile
+++ b/sched/Makefile
@@ -59,7 +59,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/syscall/Makefile b/syscall/Makefile
index c8ed9fab3e..9ad30b62c4 100644
--- a/syscall/Makefile
+++ b/syscall/Makefile
@@ -93,7 +93,7 @@ $(BIN3): $(WRAP_OBJS)
 
 $(SYSCALLWRAPS): .context
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(PROXYDEPPATH) $(STUBDEPPATH) $(WRAPDEPPATH) \
 	  "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
diff --git a/video/Makefile b/video/Makefile
index 52d95ea375..92492d3753 100644
--- a/video/Makefile
+++ b/video/Makefile
@@ -56,7 +56,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN):	$(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
diff --git a/wireless/Makefile b/wireless/Makefile
index 5a22077cb7..edd9082328 100644
--- a/wireless/Makefile
+++ b/wireless/Makefile
@@ -61,7 +61,7 @@ $(COBJS): %$(OBJEXT): %.c
 $(BIN): $(OBJS)
 	$(call ARCHIVE, $@, $(OBJS))
 
-.depend: Makefile $(SRCS)
+.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
 	$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@