diff --git a/examples/flash_test/Makefile b/examples/flash_test/Makefile
index 314a74447..cf4ef4812 100644
--- a/examples/flash_test/Makefile
+++ b/examples/flash_test/Makefile
@@ -36,10 +36,6 @@
 
 include $(TOPDIR)/Make.defs
 
-ifeq ($(WINTOOL),y)
-INCDIROPT = -w
-endif
-
 # SMART FLASH block device test
 
 PROGNAME = flash_test
diff --git a/examples/pashello/Makefile b/examples/pashello/Makefile
index f11badbdf..8c6c11e06 100644
--- a/examples/pashello/Makefile
+++ b/examples/pashello/Makefile
@@ -42,9 +42,6 @@ PRIORITY = SCHED_PRIORITY_DEFAULT
 STACKSIZE = 2048
 MODULE = $(CONFIG_EXAMPLES_PASHELLO)
 
-ifeq ($(WINTOOL),y)
-INCDIROPT = -w
-endif
 CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" \
   "." \
   "$(APPDIR)$(DELIM)interpreters$(DELIM)pcode$(DELIM)include" \
diff --git a/netutils/thttpd/cgi-src/Makefile b/netutils/thttpd/cgi-src/Makefile
index 16e0c3734..779a5af09 100644
--- a/netutils/thttpd/cgi-src/Makefile
+++ b/netutils/thttpd/cgi-src/Makefile
@@ -35,10 +35,6 @@
 
 include $(TOPDIR)/Make.defs
 
-ifeq ($(WINTOOL),y)
-INCDIROPT	= -w
-endif
-
 CFLAGS		+= ${shell $(INCDIR) $(INCDIROPT) "$(CC)" "$(APPDIR)/netutils/thttpd" "$(APPDIR)/netutils/thttpd/cgi-src"}
 CGIBINDIR	= $(APPDIR)/netutils/thttpd/cgi-bin
 CLEANFILES	= *.o redirect ssi phf
diff --git a/testing/smart_test/Makefile b/testing/smart_test/Makefile
index a62ae8d60..f13fd2146 100644
--- a/testing/smart_test/Makefile
+++ b/testing/smart_test/Makefile
@@ -36,10 +36,6 @@
 
 include $(TOPDIR)/Make.defs
 
-ifeq ($(WINTOOL),y)
-INCDIROPT = -w
-endif
-
 # SMART filesystem test tool
 
 PROGNAME = smart_test