1 files changed, 3 insertions, 0 deletions
diff --git a/src/decorators/ConcatDecorator.php b/src/decorators/ConcatDecorator.php
index 968fa67e..a81edaf6 100644
--- a/src/decorators/ConcatDecorator.php
+++ b/src/decorators/ConcatDecorator.php
@@ -14,6 +14,9 @@ class ConcatDecorator extends Decorator
         $this->c = $values;
     }
 
+    /**
+     * @return string
+     */
     public function value($fields)
     {
         $accum = '';