diff --git a/frontend/src/components/base/BaseButton.story.vue b/frontend/src/components/base/BaseButton.story.vue
index 3ab41f876..abe7a2117 100644
--- a/frontend/src/components/base/BaseButton.story.vue
+++ b/frontend/src/components/base/BaseButton.story.vue
@@ -1,10 +1,10 @@
 <script lang="ts" setup>
 import {logEvent} from 'histoire/client'
-import {reactive} from 'vue'
+import {reactive, type App} from 'vue'
 import {createRouter, createMemoryHistory} from 'vue-router'
 import BaseButton from './BaseButton.vue'
 
-function setupApp({ app }) {
+function setupApp({ app }: { app: App }) {
 	// Router mock
 	app.use(createRouter({
 		history: createMemoryHistory(),
diff --git a/frontend/src/components/input/FancyCheckbox.story.vue b/frontend/src/components/input/FancyCheckbox.story.vue
index 32245eab0..c6cdef261 100644
--- a/frontend/src/components/input/FancyCheckbox.story.vue
+++ b/frontend/src/components/input/FancyCheckbox.story.vue
@@ -11,7 +11,7 @@ const isCheckedInitiallyEnabled = ref(true)
 
 const isCheckedDisabled = ref(false)
 
-const withoutInitialState = ref<boolean | undefined>()
+const withoutInitialState = ref(false)
 </script>