diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index 238c3cad60a..d961cd20536 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -1027,6 +1027,7 @@ class FormMail extends Form
 				$out .= '	$(document).on("keypress", \'#mailform\', function (e) {		/* Note this is called at every key pressed ! */
 	    						var code = e.keyCode || e.which;
 	    						if (code == 13) {
+									console.log("Enter was intercepted and blocked");
 	        						e.preventDefault();
 	        						return false;
 	    						}