diff --git a/README.md b/README.md
index ca0173689..2f31f993d 100644
--- a/README.md
+++ b/README.md
@@ -45,8 +45,9 @@ FLAGS
       --gool              enable gool mode (warp in warp)
       --cfon              enable psiphon mode (must provide country as well)
       --country STRING    psiphon country code (valid values: [AT BE BG BR CA CH CZ DE DK EE ES FI FR GB HU IE IN IT JP LV NL NO PL RO RS SE SG SK UA US]) (default: AT)
-      --scan              enable warp scanning (experimental)
+      --scan              enable warp scanning
       --rtt DURATION      scanner rtt limit (default: 1s)
+  -c, --config STRING     path to config file
 ```
 
 ### Country Codes for Psiphon
diff --git a/app/app.go b/app/app.go
index f2b4f0d56..d4e0c9fdb 100644
--- a/app/app.go
+++ b/app/app.go
@@ -111,7 +111,11 @@ func runWarp(ctx context.Context, l *slog.Logger, bind netip.AddrPort, endpoint
 		return err
 	}
 
-	tnet.StartProxy(bind)
+	_, err = tnet.StartProxy(bind)
+	if err != nil {
+		return err
+	}
+
 	l.Info("serving proxy", "address", bind)
 
 	return nil