diff --git a/htdocs/cashdesk/include/keypad.php b/htdocs/cashdesk/include/keypad.php
index 798c30c92fb..7560180396a 100644
--- a/htdocs/cashdesk/include/keypad.php
+++ b/htdocs/cashdesk/include/keypad.php
@@ -16,7 +16,7 @@
  */
 
 /**
- * Return a string to outptu a keypad
+ * Return a string to output a keypad
  *
  * @param	string		$keypadname		Key pad name
  * @param 	string		$formname		Form name
@@ -24,6 +24,8 @@
  */
 function genkeypad($keypadname, $formname)
 {
+	global $conf;
+
 	if (empty($conf->global->CASHDESK_SHOW_KEYPAD)) return '';
 
 	// défine the font size of button