diff --git a/src/NXP/MathExecutor.php b/src/NXP/MathExecutor.php
index d123c09..29c6a64 100644
--- a/src/NXP/MathExecutor.php
+++ b/src/NXP/MathExecutor.php
@@ -303,7 +303,7 @@ protected function defaultVars()
     {
         return [
             'pi' => 3.14159265359,
-            'e' => 2.71828182846
+            'e'  => 2.71828182846
         ];
     }
 }