diff --git a/lib/pleroma/reverse_proxy.ex b/lib/pleroma/reverse_proxy.ex
index 880940d07..ec7732946 100644
--- a/lib/pleroma/reverse_proxy.ex
+++ b/lib/pleroma/reverse_proxy.ex
@@ -81,9 +81,9 @@ def default_cache_control_header, do: @default_cache_control_header
   import Plug.Conn
 
   @type option() ::
-          {:max_read_duration, :timer.time() | :infinity}
+          {:max_read_duration, non_neg_integer() | :infinity}
           | {:max_body_length, non_neg_integer() | :infinity}
-          | {:failed_request_ttl, :timer.time() | :infinity}
+          | {:failed_request_ttl, non_neg_integer() | :infinity}
           | {:http, []}
           | {:req_headers, [{String.t(), String.t()}]}
           | {:resp_headers, [{String.t(), String.t()}]}