diff --git a/htdocs/takepos/index.php b/htdocs/takepos/index.php
index e67ee97f16f..88ca39aef2a 100644
--- a/htdocs/takepos/index.php
+++ b/htdocs/takepos/index.php
@@ -711,7 +711,15 @@ function New() {
  * return   void
  */
 function Search2(keyCodeForEnter, moreorless) {
-	var eventKeyCode = window.event.keyCode;
+	var eventKeyCode = null;
+
+	if (window.event && window.event.keyCode) {
+		eventKeyCode = window.event.keyCode;
+	}
+	if (eventKeyCode === null && keyCodeForEnter !== '') {
+		// No key code available, exit early if a key code is required
+		return;
+	}
 
 	console.log("Search2 Call ajax search to replace products keyCodeForEnter="+keyCodeForEnter+", eventKeyCode="+eventKeyCode);