diff --git a/htdocs/webservices/server_productorservice.php b/htdocs/webservices/server_productorservice.php
index c8475089212..3b2110b9602 100644
--- a/htdocs/webservices/server_productorservice.php
+++ b/htdocs/webservices/server_productorservice.php
@@ -158,7 +158,7 @@ if (isset($extrafields->attributes[$elementtype]['label']) && is_array($extrafie
 }
 
 if (!empty($extrafield_array) && is_array($extrafield_array)) {
-  $productorservice_fields = array_merge($productorservice_fields, $extrafield_array);
+	$productorservice_fields = array_merge($productorservice_fields, $extrafield_array);
 }
 
 // Define other specific objects