diff --git a/frontend/src/pages/Lesson.vue b/frontend/src/pages/Lesson.vue
index 469dedbf..4bc0d938 100644
--- a/frontend/src/pages/Lesson.vue
+++ b/frontend/src/pages/Lesson.vue
@@ -237,6 +237,8 @@ const lesson = createResource({
 
 const renderEditor = (holder, content) => {
 	// empty the holder
+	if (document.getElementById(holder))
+		document.getElementById(holder).innerHTML = ''
 	return new EditorJS({
 		holder: holder,
 		tools: getEditorTools(),