diff --git a/src/Illuminate/Http/Response.php b/src/Illuminate/Http/Response.php
index f8bc37899cee..b48ea7ffcbb1 100755
--- a/src/Illuminate/Http/Response.php
+++ b/src/Illuminate/Http/Response.php
@@ -53,6 +53,10 @@ public function setContent($content)
             $this->header('Content-Type', 'application/json');
 
             $content = $this->morphToJson($content);
+
+            if ($content === false) {
+                throw new \UnexpectedValueException(sprintf('Failed to convert the provided Response content to JSON with the message: %s', json_last_error_msg()));
+            }
         }
 
         // If this content implements the "Renderable" interface then we will call the