diff --git a/src/Illuminate/Routing/Middleware/ValidateSignature.php b/src/Illuminate/Routing/Middleware/ValidateSignature.php
index 01163553a329..63841b28ce08 100644
--- a/src/Illuminate/Routing/Middleware/ValidateSignature.php
+++ b/src/Illuminate/Routing/Middleware/ValidateSignature.php
@@ -28,7 +28,9 @@ class ValidateSignature
      */
     public function handle($request, Closure $next, $relative = null)
     {
-        if ($request->hasValidSignatureWhileIgnoring($this->ignore, $relative !== 'relative')) {
+        $ignore = property_exists($this, 'except') ? $this->except : $this->ignore;
+
+        if ($request->hasValidSignatureWhileIgnoring($ignore, $relative !== 'relative')) {
             return $next($request);
         }