diff --git a/simgear/screen/extensions.hxx b/simgear/screen/extensions.hxx
index 7c97bd60..f97e0ad7 100644
--- a/simgear/screen/extensions.hxx
+++ b/simgear/screen/extensions.hxx
@@ -54,7 +54,7 @@ bool SGIsOpenGLExtensionSupported(char *extName);
   // don't use an inline function for symbol lookup, since it is too big
   void* macosxGetGLProcAddress(const char *func);
 
-#else if !defined( WIN32 )
+#elif !defined( WIN32 )
 
   void *SGGetGLProcAddress(const char *func);