diff --git a/config/monitoring/grafana.nix b/config/monitoring/grafana.nix
index ddb1ffd..6a14083 100644
--- a/config/monitoring/grafana.nix
+++ b/config/monitoring/grafana.nix
@@ -86,7 +86,7 @@ in {
   environment.etc = builtins.listToAttrs (map (
       name: {
         name = "grafana-dashboards/" + name;
-        value = {source = dashboardsDir + "/" + name;};
+        value = {source = dashboardsDir + ("/" + name);};
       }
     )
     dashboardFiles);