diff --git a/src/client/app/data.ts b/src/client/app/data.ts
index 3e3fa7a2..cea5a8a8 100644
--- a/src/client/app/data.ts
+++ b/src/client/app/data.ts
@@ -31,8 +31,10 @@ export const siteDataRef: Ref<SiteData> = shallowRef(
 
 // hmr
 if (import.meta.hot) {
-  import.meta.hot!.accept('/@siteData', (m) => {
-    siteDataRef.value = m.default
+  import.meta.hot.accept('/@siteData', (m) => {
+    if (m) {
+      siteDataRef.value = m.default
+    }
   })
 }