diff --git a/src/Illuminate/Validation/Concerns/FormatsMessages.php b/src/Illuminate/Validation/Concerns/FormatsMessages.php
index 39d102a331ba..f433a5361eec 100644
--- a/src/Illuminate/Validation/Concerns/FormatsMessages.php
+++ b/src/Illuminate/Validation/Concerns/FormatsMessages.php
@@ -336,7 +336,7 @@ public function getDisplayableValue($attribute, $value)
             return $value ? 'true' : 'false';
         }
 
-        return $value;
+        return (string) $value;
     }
 
     /**