diff --git a/src/pages/Home.vue b/src/pages/Home.vue
index a83aa7a..dea3272 100644
--- a/src/pages/Home.vue
+++ b/src/pages/Home.vue
@@ -52,6 +52,6 @@ function hide() {
   show.value = false
 }
 
-whenever(ctrl_s, () => {})
-whenever(ctrl_r, () => {})
+whenever(ctrl_s!, () => {})
+whenever(ctrl_r!, () => {})
 </script>
diff --git a/src/pages/Tutorial.vue b/src/pages/Tutorial.vue
index 9f940d8..bd690b5 100644
--- a/src/pages/Tutorial.vue
+++ b/src/pages/Tutorial.vue
@@ -98,7 +98,7 @@ async function getContent() {
 }
 
 function createNew() {
-  tutorial.display = list.value[list.value.length - 1].display + 1
+  tutorial.display = list.value[list.value.length - 1]?.display ?? 0 + 1
   tutorial.title = ""
   tutorial.content = ""
   tutorial.is_public = false