diff --git a/src/Makefile b/src/Makefile
index 109d02e..df4e03c 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -3,8 +3,8 @@ PREFIX	= /usr/local
 DESTDIR	= 
 BINDIR	= $(PREFIX)/bin
 CC	= cc
-CPPFLAGSF= -I $(PREFIX)/include
-CPPFLAGS=
+CPPFLAGSF=
+CPPFLAGS= -I $(PREFIX)/include
 CFLAGSF	= -W
 CFLAGS	= -Wall -g -O2 -pedantic
 LDFLAGSF= -lSystem
diff --git a/src/project.conf b/src/project.conf
index 941e8e4..086592d 100644
--- a/src/project.conf
+++ b/src/project.conf
@@ -1,5 +1,5 @@
 targets=configure,makedepend
-cppflags_force=-I $(PREFIX)/include
+cppflags=-I $(PREFIX)/include
 cflags_force=-W
 cflags=-Wall -g -O2 -pedantic
 ldflags_force=-lSystem