diff --git a/netutils/thttpd/Makefile b/netutils/thttpd/Makefile
index c950650fd..998a51448 100644
--- a/netutils/thttpd/Makefile
+++ b/netutils/thttpd/Makefile
@@ -53,6 +53,7 @@ endif
 
 ifeq ($(CONFIG_THTTPD_BINFS),y)
   CSRCS +=  phf.c redirect.c ssi.c
+  CFLAGS += ${shell $(INCDIR) "$(CC)" "$(APPDIR)$(DELIM)netutils$(DELIM)thttpd"}
   DEPPATHS += --dep-path cgi-src
   VPATH += :cgi-src
 
diff --git a/netutils/thttpd/cgi-src/Makefile b/netutils/thttpd/cgi-src/Makefile
index 1bb0736c2..ee5c23e9a 100644
--- a/netutils/thttpd/cgi-src/Makefile
+++ b/netutils/thttpd/cgi-src/Makefile
@@ -35,7 +35,7 @@
 
 include $(TOPDIR)/Make.defs
 
-CFLAGS		+= ${shell $(INCDIR) "$(CC)" "$(APPDIR)/netutils/thttpd" "$(APPDIR)/netutils/thttpd/cgi-src"}
+CFLAGS		+= ${shell $(INCDIR) "$(CC)" "$(APPDIR)$(DELIM)netutils$(DELIM)thttpd"}
 CGIBINDIR	= $(APPDIR)/netutils/thttpd/cgi-bin
 CLEANFILES	= *.o redirect ssi phf