diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index 6f151698cfc..279eb1f7a6b 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -1316,7 +1316,7 @@ abstract class CommonDocGenerator
         if (!empty($fields))
         {
             // Sort extrafields by rank
-            uasort($fields, function($a, $b) {
+            uasort($fields, function ($a, $b) {
                 return  ($a->rank > $b->rank) ? -1 : 1;
 			});