diff --git a/superset-frontend/src/components/AlteredSliceTag/AlteredSliceTagMocks.ts b/superset-frontend/src/components/AlteredSliceTag/AlteredSliceTagMocks.ts
index 30867bdb988ca..45535258fe6ca 100644
--- a/superset-frontend/src/components/AlteredSliceTag/AlteredSliceTagMocks.ts
+++ b/superset-frontend/src/components/AlteredSliceTag/AlteredSliceTagMocks.ts
@@ -60,7 +60,7 @@ export const defaultProps: Record<string, Partial<QueryFormData>> = {
   },
 };
 
-export const expectedDiffs: Record<string, Partial<QueryFormData>> = {
+export const expectedDiffs: Record<string, DiffType> = {
   adhoc_filters: {
     before: [
       {