diff --git a/src/macappkit.m b/src/macappkit.m
index 7945090f40..de080cc3f4 100644
--- a/src/macappkit.m
+++ b/src/macappkit.m
@@ -2335,6 +2335,7 @@ - (void)setupWindow
       [window setContentView:visualEffectView];
       MRC_RELEASE (visualEffectView);
       FRAME_BACKGROUND_ALPHA_ENABLED_P (f) = true;
+      window.titlebarAppearsTransparent = true;
     }
   [[window contentView] addSubview:emacsView];
   [self updateBackingScaleFactor];