diff --git a/src/transport/Makefile b/src/transport/Makefile
index 70b972a..fe177f2 100644
--- a/src/transport/Makefile
+++ b/src/transport/Makefile
@@ -3,8 +3,8 @@ PREFIX	= /usr/local
 DESTDIR	=
 LIBDIR	= $(PREFIX)/lib
 CC	?= cc
-CPPFLAGSF?=
-CPPFLAGS= -I ../../include
+CPPFLAGSF= -I ../../include
+CPPFLAGS=
 CFLAGSF	= -W
 CFLAGS	= -Wall -g -O2 -pedantic -fPIC
 AR	?= ar
diff --git a/src/transport/project.conf b/src/transport/project.conf
index a6f04b6..b597fe8 100644
--- a/src/transport/project.conf
+++ b/src/transport/project.conf
@@ -1,5 +1,6 @@
 targets=tcp,udp
-cppflags=-I ../../include
+cppflags_force=-I ../../include
+cppflags=
 cflags_force=-W
 cflags=-Wall -g -O2 -pedantic -fPIC