diff --git a/cocoa.m b/cocoa.m
index 989efd5..f80a70b 100644
--- a/cocoa.m
+++ b/cocoa.m
@@ -233,7 +233,7 @@ int keymap[] =
 */
 };
 
-int cocoa_keycode_to_qemu(int keycode)
+static int cocoa_keycode_to_qemu(int keycode)
 {
     if((sizeof(keymap)/sizeof(int)) <= keycode)
     {