diff --git a/edit/source-editor.js b/edit/source-editor.js
index 922b301d..660b26f8 100644
--- a/edit/source-editor.js
+++ b/edit/source-editor.js
@@ -49,6 +49,7 @@ function createSourceEditor(style) {
   const cm = CodeMirror.fromTextArea($('#sections textarea'));
   // too many functions depend on this global
   editors.push(cm);
+  cm.focus();
 
   // draw metas info
   updateMeta();