diff --git a/libraries/chart/pma_chart.php b/libraries/chart/pma_chart.php
index 6202273be..423641a0d 100644
--- a/libraries/chart/pma_chart.php
+++ b/libraries/chart/pma_chart.php
@@ -66,8 +66,9 @@ class PMA_Chart
      */
     function handleOptions($options)
     {
-        if (is_null($options))
+        if (is_null($options)) {
             return;
+        }
 
         $this->settings = array_merge($this->settings, $options);
     }