diff --git a/src/Illuminate/Contracts/Auth/Guard.php b/src/Illuminate/Contracts/Auth/Guard.php
index 2a2ed3d9a5e4..809ffc492692 100644
--- a/src/Illuminate/Contracts/Auth/Guard.php
+++ b/src/Illuminate/Contracts/Auth/Guard.php
@@ -47,4 +47,11 @@ public function validate(array $credentials = []);
      * @return void
      */
     public function setUser(Authenticatable $user);
+
+    /**
+     * Determine if the guard has a user instance.
+     *
+     * @return bool
+     */
+    public function hasUser();
 }