diff --git a/src/os_mac_conv.c b/src/os_mac_conv.c
index 12e80f3451..71960daa5d 100644
--- a/src/os_mac_conv.c
+++ b/src/os_mac_conv.c
@@ -22,12 +22,6 @@
 #endif
 
 
-#ifdef FEAT_GUI_MACVIM
-/* Include Carbon here instead of in one of the header files to avoid polluting
- * the global namespace. */
-# include <Carbon/Carbon.h>
-#endif
-
 #if defined(MACOS_CONVERT) || defined(PROTO)
 
 # ifdef PROTO