diff --git a/configs/metrics/exporters.nix b/configs/metrics/exporters.nix
index 38bc406..b8dd2e5 100644
--- a/configs/metrics/exporters.nix
+++ b/configs/metrics/exporters.nix
@@ -8,7 +8,7 @@
     enabledCollectors = [ "systemd" ];
     extraFlags = [
       "--collector.systemd.enable-restarts-metrics"
-      ''--collector.systemd.unit-include=(llama-server|llama-vision)\.service''
+      "--collector.systemd.unit-include=(llama-server|llama-vision)[.]service"
     ];
     openFirewall = false;
   };