diff --git a/xscreensaver/hacks/glx/dymaxionmap.c b/xscreensaver/hacks/glx/dymaxionmap.c
index 41de703..c8b432e 100644
--- a/xscreensaver/hacks/glx/dymaxionmap.c
+++ b/xscreensaver/hacks/glx/dymaxionmap.c
@@ -112,12 +112,6 @@ ModStruct   planet_description =
  "Buckminster Fuller's unwrapped icosahedral globe", 0, NULL};
 #endif
 
-# ifdef __GNUC__
-  __extension__	 /* don't warn about "string length is greater than the length
-		    ISO C89 compilers are required to support" when including
-		    the following XPM file... */
-# endif
-
 #include "images/gen/earth_flat_png.h"
 #include "images/gen/earth_png.h"
 #include "images/gen/earth_night_png.h"