diff --git a/cde/config/cf/linux.cf b/cde/config/cf/linux.cf
index 18c73ea2a..b140fb2cd 100644
--- a/cde/config/cf/linux.cf
+++ b/cde/config/cf/linux.cf
@@ -3,7 +3,7 @@ XCOMM platform:  $TOG: linux.cf /main/47 1998/04/17 11:32:51 mgreess $
 /* To reduce the number of warnings generated by X11 and Motif headers that
    dislike -ansi and -pedantic we can include them with -isystem instead of
    -I, this tells GCC to treat them as system includes out of our control */
-#define TopXInclude -isystem $(TOP)/imports/x11/include
+#define TopXInclude -isystem$(TOP)/imports/x11/include
 
 #ifndef OSName
 #define OSName			DefaultOSName