diff --git a/nip11/fetch.go b/nip11/fetch.go
index 1bfc1e7..3c201f1 100644
--- a/nip11/fetch.go
+++ b/nip11/fetch.go
@@ -18,10 +18,13 @@ func Fetch(ctx context.Context, u string) (info *RelayInformationDocument, err e
 		defer cancel()
 	}
 
-	// normalize URL to start with http:// or https://
-	if strings.HasPrefix(u, "ws") {
+	// normalize URL to start with http://, https:// or without protocol
+	if strings.HasPrefix(u, "wss://") || strings.HasPrefix(u, "ws://") {
 		u = "http" + u[2:]
 	}
+	if !(strings.HasPrefix(u, "http://") || strings.HasPrefix(u, "https://")) {
+		u = "http://" + u
+	}
 	u = strings.TrimRight(u, "/")
 
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, u, nil)