diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index 8695818c991..d9e95e9cd4d 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -588,11 +588,11 @@ function confirmDolibarr(msg, id, popupWidth = 400, disableCancelButton = 0) {
 
 	let buttons = {};
 	if (disableCancelButton === 0) {
-		buttons.Cancel = function () {
+		buttons['<?php echo dol_escape_js($langs->trans("Cancel")); ?>'] = function () {
 		   $(this).dialog("close");
 		};
 	}
-	buttons.OK = function () {
+	buttons['<?php echo dol_escape_js($langs->trans("OK")); ?>'] = function () {
 		console.log("We click OK"); $(this).dialog("close"); alink.setAttribute("data-alreadyclicked", "1"); alink.click(); return false;
 	};
 
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index 5455ada02a6..13cc6274ab5 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -1402,3 +1402,5 @@ ToPay=Pay
 StarsFieldValue=%s stars
 Archives=Archives
 LastMainDoc=Last generated document
+OK=OK
+KO=KO