diff --git a/htdocs/core/modules/modSkype.class.php b/htdocs/core/modules/modSkype.class.php
index ab3f97899d9..c1c7d8aed76 100644
--- a/htdocs/core/modules/modSkype.class.php
+++ b/htdocs/core/modules/modSkype.class.php
@@ -99,6 +99,8 @@ class modSkype extends DolibarrModules
      */
     function init($options='')
     {
+		$sql = array();
+
         // Prevent pb of modules not correctly disabled
         //$this->remove($options);