diff --git a/etemplate/empty.html b/etemplate/empty.html
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/etemplate/js/etemplate2.js b/etemplate/js/etemplate2.js
index d3bc0e5116..7eb8e8e24b 100644
--- a/etemplate/js/etemplate2.js
+++ b/etemplate/js/etemplate2.js
@@ -594,6 +594,10 @@ etemplate2.prototype.autocomplete_fixer = function (_node,_id)
 		var $form = jQuery(document.createElement('form'))
 				.attr({id:id + '_form_autocomplete_fixer',action:'about:blank', target:'egw_iframe_autocomplete helper'})
 				.css({height:"100%"});
+		// Firefox give a security warning when transmitting to "about:blank" from a https site
+		// we work around that by giving existing etemplate/empty.html url
+		if (navigator.userAgent.match(/firefox/i))
+			$form.attr({action: egw.webserverUrl+'/etemplate/empty.html',method:'post'});
 		//Creates iframe for fake submission
 		$et2_container.before(jQuery(document.createElement('iframe'))
 				.attr({id:id + '_iframe_autocomplete_fixer',src:'about:blank',name:'egw_iframe_autocomplete helper'}).hide());
@@ -604,13 +608,11 @@ etemplate2.prototype.autocomplete_fixer = function (_node,_id)
 	setTimeout(function(){
 		var $a = jQuery(node).parent();
 		if ($a.length>0 && typeof $a.parent() != 'undefined') $a.submit(); //Submit to iframe
-		setTimeout(function(){
-			//Clean up the mess from DOM
-			if(jQuery(node).parent().is('form'))
-				jQuery(node).unwrap();
-			jQuery('iframe#'+id + '_iframe_autocomplete_fixer').remove();
-		},1);
-	},1);
+		//Clean up the mess from DOM
+		if(jQuery(node).parent().is('form'))
+			jQuery(node).unwrap();
+		jQuery('iframe#'+id + '_iframe_autocomplete_fixer').remove();
+	},0);
 };
 
 /**