diff --git a/backend/src/middleware/notifications/posts-in-groups.spec.ts b/backend/src/middleware/notifications/posts-in-groups.spec.ts
index 86e700d1c..742685816 100644
--- a/backend/src/middleware/notifications/posts-in-groups.spec.ts
+++ b/backend/src/middleware/notifications/posts-in-groups.spec.ts
@@ -295,6 +295,7 @@ describe('notify group members of new posts in group', () => {
       })
 
       it('sends NO notification when another post is posted', async () => {
+        jest.clearAllMocks()
         authenticatedUser = await groupMember.toJson()
         await markAllAsRead()
         authenticatedUser = await postAuthor.toJson()
@@ -323,6 +324,10 @@ describe('notify group members of new posts in group', () => {
         })
       })
 
+      it('sends NO email', () => {
+        expect(sendMailMock).not.toHaveBeenCalled()
+      })
+
       describe('group member unmutes group again but disables email', () => {
         beforeAll(async () => {
           jest.clearAllMocks()