diff --git a/src/components/Course/components/Lesson/Materials/index.svelte b/src/components/Course/components/Lesson/Materials/index.svelte
index b63334d4..bbb50c60 100644
--- a/src/components/Course/components/Lesson/Materials/index.svelte
+++ b/src/components/Course/components/Lesson/Materials/index.svelte
@@ -70,14 +70,14 @@
         badgeValue = !!note ? 1 : 0;
       } else {
         badgeValue =
-          typeof video_url === 'string' ? video_url.split(',').length : 0;
+          typeof video_url === 'string' && !!video_url
+            ? video_url.split(',').length
+            : 0;
       }
 
       tab.badgeValue = badgeValue;
       return tab;
     });
-
-    console.log(`tabs`, tabs);
   }
 
   $: handleSave(prevMode);
@@ -138,7 +138,7 @@
           bind:value={$lesson.materials.video_url}
           onChange={() => ($isLessonDirty = true)}
         />
-      {:else if $lesson.materials.video_url && $lesson.materials.video_url.includes('youtube')}
+      {:else if !!$lesson.materials.video_url && $lesson.materials.video_url.includes('youtube')}
         {#each $lesson.materials.video_url.split(',') as url}
           <div class="mb-5">
             <iframe
diff --git a/src/components/Course/components/Lesson/store/lessons.js b/src/components/Course/components/Lesson/store/lessons.js
index 7bb83a56..e3addb78 100644
--- a/src/components/Course/components/Lesson/store/lessons.js
+++ b/src/components/Course/components/Lesson/store/lessons.js
@@ -86,5 +86,11 @@ export async function handleSaveLesson(lesson, course_id) {
 }
 
 export async function handleUpdateLessonMaterials(lesson, lessonId) {
-  return await updateLesson(lesson.materials, lessonId);
+  const materials = {
+    ...lesson.materials,
+  };
+
+  delete materials.totalExercises;
+
+  return await updateLesson(materials, lessonId);
 }