diff --git a/simgear/screen/extensions.cxx b/simgear/screen/extensions.cxx
index e6c17ea2..4acf0e26 100644
--- a/simgear/screen/extensions.cxx
+++ b/simgear/screen/extensions.cxx
@@ -24,12 +24,14 @@
 
 #include <string.h>
 
-#ifndef WIN32
-#include <dlfcn.h>
-#else
+#ifdef WIN32
 #include <windows.h>
 #endif
 
+#if !defined( WIN32 ) && !defined( __APPLE__ )
+#include <dlfcn.h>
+#endif
+
 #include "extensions.hxx"
 
 bool SGSearchExtensionsString(char *extString, char *extName) {