diff --git a/src/PersistentData/PersistentDataManager.php b/src/PersistentData/PersistentDataManager.php
index aeb7949..627a783 100644
--- a/src/PersistentData/PersistentDataManager.php
+++ b/src/PersistentData/PersistentDataManager.php
@@ -57,7 +57,7 @@ class PersistentDataManager
             $value = current($data);
             $relation = key($relations);
 
-            if (strpos($key, '__') == false) {
+            if (strpos($key, '__') === false) {
                 $method = 'set' . str_replace('_', '', ucwords($key, '_'));
 
                 if (method_exists($model, $method) && isset($value)) {