diff --git a/home-manager/fred.nix b/home-manager/fred.nix
index ecac730..fcd16b5 100644
--- a/home-manager/fred.nix
+++ b/home-manager/fred.nix
@@ -42,6 +42,7 @@ in
       background-opacity = 0.98;
       confirm-close-surface = false;
       gtk-titlebar = false;
+      gtk-single-instance = true;
       cursor-style = "bar";
       cursor-style-blink = true;
     };