diff --git a/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
index 3351fd61..71e0dff8 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
@@ -277,6 +277,46 @@ class PersonServiceTest {
                 .contains("Frau");
     }
 
+    @Test
+    void updatePerson_doesNotPublishEvent_whenOnlyAliasChanges() {
+        UUID id = UUID.randomUUID();
+        Person existing = Person.builder()
+                .id(id).firstName("Auguste").lastName("Raddatz")
+                .personType(PersonType.PERSON).alias("old alias").build();
+
+        when(personRepository.findById(id)).thenReturn(Optional.of(existing));
+        when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setPersonType(PersonType.PERSON);
+        dto.setFirstName("Auguste"); dto.setLastName("Raddatz");
+        dto.setAlias("new alias");
+
+        personService.updatePerson(id, dto);
+
+        verify(eventPublisher, never()).publishEvent(any(PersonDisplayNameChangedEvent.class));
+    }
+
+    @Test
+    void updatePerson_doesNotPublishEvent_whenOnlyNotesChanges() {
+        UUID id = UUID.randomUUID();
+        Person existing = Person.builder()
+                .id(id).firstName("Auguste").lastName("Raddatz")
+                .personType(PersonType.PERSON).notes("first note").build();
+
+        when(personRepository.findById(id)).thenReturn(Optional.of(existing));
+        when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setPersonType(PersonType.PERSON);
+        dto.setFirstName("Auguste"); dto.setLastName("Raddatz");
+        dto.setNotes("revised note");
+
+        personService.updatePerson(id, dto);
+
+        verify(eventPublisher, never()).publishEvent(any(PersonDisplayNameChangedEvent.class));
+    }
+
     // ─── findOrCreateByAlias ─────────────────────────────────────────────────
 
     @Test