--- backend/src/unix/Makefile.in.orig
+++ backend/src/unix/Makefile.in
@@ -388,7 +388,7 @@
 			-DWORKRAVE_PKGDATADIR="\"${pkgdatadir}\"" \
 			-D_XOPEN_SOURCE=600 \
 			@WR_COMMON_INCLUDES@ \
-			@GLIB_CFLAGS@ @GTK_CFLAGS@ @GCONF_CFLAGS@
+			@GLIB_CFLAGS@ @GTK_CFLAGS@ @GCONF_CFLAGS@ @GNOME2_CFLAGS@
 
 EXTRA_DIST = $(wildcard $(srcdir)/*.cc) $(wildcard $(srcdir)/*.rc)\
 			$(wildcard $(srcdir)/*.hh) $(wildcard $(srcdir)/*.h) $(wildcard $(srcdir)/*.icc)