diff --git a/include/osg/State b/include/osg/State
index a3b5ce51e..8eef4b040 100644
--- a/include/osg/State
+++ b/include/osg/State
@@ -31,7 +31,7 @@ namespace osg {
 #endif
 
 #ifndef GL_SECONDARY_COLOR_ARRAY
-    #ifdef GL_SECONDARY_COLOR_ARRAY
+    #ifdef GL_SECONDARY_COLOR_ARRAY_EXT
         #define GL_SECONDARY_COLOR_ARRAY GL_SECONDARY_COLOR_ARRAY_EXT
     #else
      	#define GL_SECONDARY_COLOR_ARRAY 0x845E