diff --git a/pkgs/desktops/pantheon/apps/switchboard/wrapper.nix b/pkgs/desktops/pantheon/apps/switchboard/wrapper.nix
index 0abce8098535..cc6b37095fdb 100644
--- a/pkgs/desktops/pantheon/apps/switchboard/wrapper.nix
+++ b/pkgs/desktops/pantheon/apps/switchboard/wrapper.nix
@@ -12,7 +12,7 @@
 let
   selectedPlugs =
     if plugs == null then switchboardPlugs
-    else plugs ++ (lib.optional useDefaultPlugs switchboardPlugs);
+    else plugs ++ (lib.optionals useDefaultPlugs switchboardPlugs);
 in
 symlinkJoin {
   name = "${switchboard.name}-with-plugs";