diff --git a/defs.mak.in b/defs.mak.in
index fb2ff7c..27c361f 100644
--- a/defs.mak.in
+++ b/defs.mak.in
@@ -33,4 +33,4 @@ CWIID_PLUGINS_DIR = $(ROOTDIR)@CWIID_PLUGINS_DIR@
 
 DEBUGFLAGS = -g
 WARNFLAGS = -Wall -W
-CFLAGS = $(DEBUGFLAGS) $(WARNFLAGS) @DEFS@ -I$(COMMON)/include
+CFLAGS = @CFLAGS@ $(DEBUGFLAGS) $(WARNFLAGS) @DEFS@ -I$(COMMON)/include