diff --git a/templates/wysiwyg.tmpl b/templates/wysiwyg.tmpl
index 235c590..a1600bc 100644
--- a/templates/wysiwyg.tmpl
+++ b/templates/wysiwyg.tmpl
@@ -82,7 +82,7 @@
 					btns[i].src = btns[i].src.replace('_dark@2x.png', '@2x.png');
 				}
 			} else {
-				TextnewTheme = 'light';
+				newTheme = 'light';
 				document.body.className = document.body.className.replace(/(?:^|\s)dark(?!\S)/g, newTheme);
 				for (var i=0; i<btns.length; i++) {
 					btns[i].src = btns[i].src.replace('@2x.png', '_dark@2x.png');