diff --git a/src/config.mk.in b/src/config.mk.in
index e750202..4996afd 100644
--- a/src/config.mk.in
+++ b/src/config.mk.in
@@ -29,6 +29,7 @@
 
 CPP		= @CPP@
 CPP_MM		= @CPP_MM@
+DEPEND_CFLAGS_FILTER = @DEPEND_CFLAGS_FILTER@
 X_CFLAGS	= @X_CFLAGS@
 X_LIBS_DIR	= @X_LIBS@
 X_PRE_LIBS	= @X_PRE_LIBS@