diff --git a/basis/ui/backend/gtk/gtk.factor b/basis/ui/backend/gtk/gtk.factor
index 4f2bf1e2b7..3b45a47427 100644
--- a/basis/ui/backend/gtk/gtk.factor
+++ b/basis/ui/backend/gtk/gtk.factor
@@ -38,7 +38,7 @@ CONSTANT: modifiers
     {
         { S+ $[ GDK_SHIFT_MASK enum>number ] }
         { C+ $[ GDK_CONTROL_MASK enum>number ] }
-        { A+ $[ GDK_META_MASK enum>number ] }
+        { A+ $[ GDK_MOD1_MASK enum>number ] }
     }
 
 CONSTANT: action-key-codes