diff --git a/lib/microwaveprop_web/metrics_plug.ex b/lib/microwaveprop_web/metrics_plug.ex
index 2aaa96f4..eaf8a654 100644
--- a/lib/microwaveprop_web/metrics_plug.ex
+++ b/lib/microwaveprop_web/metrics_plug.ex
@@ -16,7 +16,12 @@ defmodule MicrowavepropWeb.MetricsPlug do
   def call(conn, _opts) do
     case authorized?(conn) do
       :ok ->
-        PromEx.Plug.call(conn, prom_ex_module: Microwaveprop.PromEx, path: "/metrics")
+        body = PromEx.get_metrics(Microwaveprop.PromEx)
+
+        conn
+        |> put_resp_content_type("text/plain; version=0.0.4")
+        |> send_resp(200, body)
+        |> halt()
 
       :denied ->
         conn