diff --git a/Imakefile b/Imakefile
index 5e44c8a..2f7fc4d 100755
--- a/Imakefile
+++ b/Imakefile
@@ -22,7 +22,7 @@ XCOMM to make transfig and fig2dev:
 XCOMM type "xmkmf", "make Makefiles", "make" then "make install"
 
 #define IHaveSubdirs
-#define PassCDebugFlags 'CDEBUGFLAGS=$(CDEBUGFLAGS)'
+#define PassCDebugFlags 'CDEBUGFLAGS=$(CDEBUGFLAGS) $(RPM_OPT_FLAGS)'
 
 DEPLIBS =
 SUBDIRS = fig2dev transfig