diff --git a/phpBB/styles/subsilver2/template/editor.js b/phpBB/styles/subsilver2/template/editor.js
index b4a426df4e..0c48c93ad3 100644
--- a/phpBB/styles/subsilver2/template/editor.js
+++ b/phpBB/styles/subsilver2/template/editor.js
@@ -276,8 +276,8 @@ function mozWrap(txtarea, open, close)
 	var s3 = (txtarea.value).substring(selEnd, selLength);
 
 	txtarea.value = s1 + open + s2 + close + s3;
-	txtarea.selectionStart = selEnd + open.length + close.length;
-	txtarea.selectionEnd = txtarea.selectionStart;
+	txtarea.selectionStart = selStart + open.length;
+	txtarea.selectionEnd = selEnd + open.length;
 	txtarea.focus();
 	txtarea.scrollTop = scrollTop;