diff --git a/nixos/modules/services/x11/desktop-managers/gnome3.nix b/nixos/modules/services/x11/desktop-managers/gnome3.nix
index d2c856fc933..21d30df5b69 100644
--- a/nixos/modules/services/x11/desktop-managers/gnome3.nix
+++ b/nixos/modules/services/x11/desktop-managers/gnome3.nix
@@ -136,7 +136,7 @@ in {
           # find theme engines
           export GTK_PATH=${config.system.path}/lib/gtk-3.0:${config.system.path}/lib/gtk-2.0
 
-          export XDG_MENU_PREFIX=gnome
+          export XDG_MENU_PREFIX=gnome-
 
           ${concatMapStrings (p: ''
             if [ -d "${p}/share/gsettings-schemas/${p.name}" ]; then