diff --git a/nix/culr-module.nix b/nix/culr-module.nix
index 50261a8..a9821e7 100644
--- a/nix/culr-module.nix
+++ b/nix/culr-module.nix
@@ -31,8 +31,8 @@ in {
         };
       in
         mkIf (cfg.pattern != "" && cfg.pattern != [])
-        serialise.${typeOf cfg.pattern}
-        cfg.pattern;
+        (serialise.${typeOf cfg.pattern}
+          cfg.pattern);
       CULR_PALETTE = mkIf (cfg.palette != []) (concatStringsSep ";" cfg.palette);
     };
   };