diff --git a/app/src/lib/stores/model-store.ts b/app/src/lib/stores/model-store.ts
index e2b0ae7..6aa3d8e 100644
--- a/app/src/lib/stores/model-store.ts
+++ b/app/src/lib/stores/model-store.ts
@@ -4,7 +4,7 @@ import { writable, type Writable } from 'svelte/store';
 
 export const emulateModel = writable(true);
 
-export const jointNames = persistentStore('joint_names', []);
+export const jointNames = persistentStore('joint_names', <string[]>[]);
 
 export const model = writable();