diff --git a/libgitg/gitg-platform-support-osx.c b/libgitg/gitg-platform-support-osx.c
index 088170cf..b90afe2e 100644
--- a/libgitg/gitg-platform-support-osx.c
+++ b/libgitg/gitg-platform-support-osx.c
@@ -23,6 +23,7 @@
 
 #include "gitg-platform-support.h"
 
+#import <AppKit/AppKit.h>
 #include <gdk/gdkquartz.h>
 #include <gio/gunixinputstream.h>