diff --git a/gtk/gtkrc.key.mac b/gtk/gtkrc.key.mac
index 7b6e8d1e4f..5389ffeea5 100644
--- a/gtk/gtkrc.key.mac
+++ b/gtk/gtkrc.key.mac
@@ -1,3 +1,5 @@
+gtk-enable-mnemonics = 0
+
 binding "gtk-mac-alt-arrows"
 {
   bind "<alt>Right"           { "move-cursor" (words, 1, 0) }