diff --git a/modules/services/grafana/module.nix b/modules/services/grafana/module.nix
index afeccb7..ebdfd1f 100644
--- a/modules/services/grafana/module.nix
+++ b/modules/services/grafana/module.nix
@@ -62,7 +62,7 @@ in {
               name = "PostgreSQL";
               type = "postgres";
               access = "proxy";
-              url = "http://127.0.0.1:${toString config.services.prometheus.exporters.postgres.port}";
+              url = "127.0.0.1:${toString config.services.prometheus.exporters.postgres.port}";
             })
           ];
         };