diff --git a/git-gui.sh b/git-gui.sh
index a5f31dc391..d640b143f3 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1221,6 +1221,10 @@ foreach class {Button Checkbutton Entry Label
 }
 unset class
 
+if {[is_Windows] || [is_MacOSX]} {
+	option add *Menu.tearOff 0
+}
+
 if {[is_MacOSX]} {
 	set M1B M1
 	set M1T Cmd