diff --git a/packages/builder/src/stores/backend/tests/datasources.spec.js b/packages/builder/src/stores/backend/tests/datasources.spec.js
index 4c29206c17..0d1d15777d 100644
--- a/packages/builder/src/stores/backend/tests/datasources.spec.js
+++ b/packages/builder/src/stores/backend/tests/datasources.spec.js
@@ -55,7 +55,7 @@ describe("Datasources Store", () => {
     expect(get(store).list).toEqual(expect.arrayContaining([SAVE_DATASOURCE]))
   })
   it("deletes a datasource, updates the store and returns status message", async () => {
-    api.get.mockReturnValue({ json: () => [SOME_DATASOURCE]})
+    api.get.mockReturnValue({ json: () => SOME_DATASOURCE})
 
     await store.fetch()