diff --git a/src/public/app/test/setup.ts b/src/public/app/test/setup.ts
index 516553422..7f3f5aa1b 100644
--- a/src/public/app/test/setup.ts
+++ b/src/public/app/test/setup.ts
@@ -48,9 +48,9 @@ function mockServer() {
                 }
             },
 
-            async post(url: string, data: {}) {
+            async post(url: string, data: object) {
                 if (url === "tree/load") {
-                    throw new Error(`A module tried to load from the server the following notes: ${data.noteIds.join(",")}\nThis is not supported, use Froca mocking instead and ensure the note exist in the mock.`)
+                    throw new Error(`A module tried to load from the server the following notes: ${((data as any).noteIds || []).join(",")}\nThis is not supported, use Froca mocking instead and ensure the note exist in the mock.`)
                 }
             }
         }