diff --git a/gnome/applet/Makefile.am b/gnome/applet/Makefile.am
index 097674014..4220f1cc7 100644
--- a/gnome/applet/Makefile.am
+++ b/gnome/applet/Makefile.am
@@ -6,7 +6,7 @@ INCLUDES = -I${top_srcdir} -I${top_srcdir}/utils
 
 libexec_PROGRAMS = nm-applet
 
-nm_applet_CFLAGS =					\
+nm_applet_CPPFLAGS =				\
 	$(DBUS_CFLAGS)					\
 	$(GTHREAD_CFLAGS)				\
 	$(HAL_CFLAGS)					\
diff --git a/src/backends/Makefile.am b/src/backends/Makefile.am
index 77fd8cf3f..995f2206b 100644
--- a/src/backends/Makefile.am
+++ b/src/backends/Makefile.am
@@ -25,7 +25,7 @@ libnmbackend_la_SOURCES +=	NetworkManagerSlackware.c
 endif
 
 libnmbackend_la_LIBADD = $(DBUS_LIBS) $(GTHREAD_LIBS)
-libnmbackend_la_CFLAGS =	$(DBUS_CFLAGS)					\
+libnmbackend_la_CPPFLAGS =	$(DBUS_CFLAGS)				\
 					$(GTHREAD_CFLAGS)				\
 					$(HAL_CFLAGS)					\
 					-g							\