diff --git a/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php b/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php
index 04d946bd551a..beb7946e67a6 100644
--- a/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php
+++ b/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php
@@ -79,7 +79,7 @@ public function handle($request, Closure $next)
             });
         }
 
-        throw new TokenMismatchException;
+        throw new TokenMismatchException('CSRF token mismatch.');
     }
 
     /**