diff --git a/modules/services/polybar.nix b/modules/services/polybar.nix
index 582d86891..6070f9b2f 100644
--- a/modules/services/polybar.nix
+++ b/modules/services/polybar.nix
@@ -237,7 +237,7 @@ in
       Unit = {
         Description = "Polybar status bar";
         PartOf = [ "tray.target" ];
-        X-Restart-Triggers = mkIf (configFile != null) "${configFile}";
+        X-Restart-Triggers = mkIf (configFile != null) [ "${configFile}" ];
       };
 
       Service = {