diff --git a/src/UserManager.js b/src/UserManager.js
index d97fd4ef..44453b9d 100644
--- a/src/UserManager.js
+++ b/src/UserManager.js
@@ -424,7 +424,9 @@ export class UserManager extends OidcClient {
     }
     _signinCallback(url, navigator) {
         Log.debug("UserManager._signinCallback");
-        return navigator.callback(url);
+        let useQuery = this._settings.response_mode === "query" || (!this._settings.response_mode && SigninRequest.isCode(this._settings.response_type));
+        let delimiter = useQuery ? "?" : "#";
+        return navigator.callback(url, undefined, delimiter);
     }
 
     signoutRedirect(args = {}) {