diff --git a/backend/src/test/java/org/raddatz/familienarchiv/service/AnnotationServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/service/AnnotationServiceTest.java
index b4813491..cd736005 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/service/AnnotationServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/service/AnnotationServiceTest.java
@@ -9,6 +9,7 @@ import org.raddatz.familienarchiv.dto.CreateAnnotationDTO;
 import org.raddatz.familienarchiv.exception.DomainException;
 import org.raddatz.familienarchiv.model.DocumentAnnotation;
 import org.raddatz.familienarchiv.repository.AnnotationRepository;
+import org.raddatz.familienarchiv.repository.TranscriptionBlockRepository;
 
 import java.util.List;
 import java.util.Optional;
@@ -27,6 +28,7 @@ import static org.springframework.http.HttpStatus.NOT_FOUND;
 class AnnotationServiceTest {
 
     @Mock AnnotationRepository annotationRepository;
+    @Mock TranscriptionBlockRepository blockRepository;
     @InjectMocks AnnotationService annotationService;
 
     // ─── createAnnotation ─────────────────────────────────────────────────────
@@ -163,9 +165,28 @@ class AnnotationServiceTest {
 
         annotationService.deleteAnnotation(docId, annotId, ownerId);
 
+        verify(blockRepository).deleteByAnnotationId(annotId);
         verify(annotationRepository).delete(annotation);
     }
 
+    @Test
+    void deleteAnnotation_deletesLinkedTranscriptionBlock_beforeAnnotation() {
+        UUID docId = UUID.randomUUID();
+        UUID annotId = UUID.randomUUID();
+        UUID ownerId = UUID.randomUUID();
+
+        DocumentAnnotation annotation = DocumentAnnotation.builder()
+                .id(annotId).documentId(docId).createdBy(ownerId).build();
+        when(annotationRepository.findByIdAndDocumentId(annotId, docId))
+                .thenReturn(Optional.of(annotation));
+
+        annotationService.deleteAnnotation(docId, annotId, ownerId);
+
+        var inOrder = org.mockito.Mockito.inOrder(blockRepository, annotationRepository);
+        inOrder.verify(blockRepository).deleteByAnnotationId(annotId);
+        inOrder.verify(annotationRepository).delete(annotation);
+    }
+
     @Test
     void deleteAnnotation_throwsForbidden_whenUserIdIsNull() {
         UUID docId = UUID.randomUUID();