diff --git a/src/Illuminate/Foundation/Providers/FormRequestServiceProvider.php b/src/Illuminate/Foundation/Providers/FormRequestServiceProvider.php
index 8a407b7bc7a2..9e413f10fdc0 100644
--- a/src/Illuminate/Foundation/Providers/FormRequestServiceProvider.php
+++ b/src/Illuminate/Foundation/Providers/FormRequestServiceProvider.php
@@ -56,6 +56,8 @@ protected function initializeRequest(FormRequest $form, Request $current)
             $current->cookies->all(), $files, $current->server->all(), $current->getContent()
         );
 
+        $form->setJson($current->json());
+
         if ($session = $current->getSession()) {
             $form->setLaravelSession($session);
         }
diff --git a/src/Illuminate/Http/Request.php b/src/Illuminate/Http/Request.php
index 6795cab7aea0..a1e7d0247f43 100644
--- a/src/Illuminate/Http/Request.php
+++ b/src/Illuminate/Http/Request.php
@@ -302,6 +302,17 @@ public function json($key = null, $default = null)
         return data_get($this->json->all(), $key, $default);
     }
 
+    /**
+     * Set the JSON payload for the request.
+     *
+     * @param  array  $json
+     * @return void
+     */
+    public function setJson($json)
+    {
+        $this->json = $json;
+    }
+
     /**
      * Get the input source for the request.
      *