diff --git a/backend/src/main/java/org/raddatz/familienarchiv/repository/TranscriptionBlockRepository.java b/backend/src/main/java/org/raddatz/familienarchiv/repository/TranscriptionBlockRepository.java
index 09ac5b60..82834365 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/repository/TranscriptionBlockRepository.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/repository/TranscriptionBlockRepository.java
@@ -22,7 +22,7 @@ public interface TranscriptionBlockRepository extends JpaRepository<Transcriptio
             SELECT b FROM TranscriptionBlock b
             JOIN DocumentAnnotation a ON a.id = b.annotationId
             JOIN Document d ON d.id = b.documentId
-            WHERE (b.source = 'MANUAL' OR (b.source = 'OCR' AND b.reviewed = true))
+            WHERE b.reviewed = true
             AND 'KURRENT_RECOGNITION' MEMBER OF d.trainingLabels
             """)
     List<TranscriptionBlock> findEligibleKurrentBlocks();
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/repository/TrainingBlockQueryTest.java b/backend/src/test/java/org/raddatz/familienarchiv/repository/TrainingBlockQueryTest.java
index d7406ba0..57e9f3e1 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/repository/TrainingBlockQueryTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/repository/TrainingBlockQueryTest.java
@@ -52,8 +52,8 @@ class TrainingBlockQueryTest {
     }
 
     @Test
-    void findEligibleKurrentBlocks_includesManualBlock() {
-        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, false));
+    void findEligibleKurrentBlocks_includesReviewedManualBlock() {
+        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, true));
 
         List<TranscriptionBlock> result = blockRepository.findEligibleKurrentBlocks();
 
@@ -61,6 +61,16 @@ class TrainingBlockQueryTest {
         assertThat(result.get(0).getSource()).isEqualTo(BlockSource.MANUAL);
     }
 
+    @Test
+    void findEligibleKurrentBlocks_excludesUnreviewedManualBlock() {
+        // MANUAL blocks filled by guided OCR but not yet reviewed should not count as checked text
+        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, false));
+
+        List<TranscriptionBlock> result = blockRepository.findEligibleKurrentBlocks();
+
+        assertThat(result).isEmpty();
+    }
+
     @Test
     void findEligibleKurrentBlocks_includesReviewedOcrBlock() {
         blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.OCR, true));
@@ -90,10 +100,11 @@ class TrainingBlockQueryTest {
     }
 
     @Test
-    void findEligibleKurrentBlocks_returnsAllEligibleAcrossBothSources() {
-        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, false));
+    void findEligibleKurrentBlocks_returnsAllReviewedBlocksAcrossBothSources() {
+        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, true));
         blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.OCR, true));
-        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.OCR, false)); // excluded
+        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.MANUAL, false)); // excluded
+        blockRepository.save(block(kurrentDocId, kurrentAnnotationId, BlockSource.OCR, false));   // excluded
 
         List<TranscriptionBlock> result = blockRepository.findEligibleKurrentBlocks();
 
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/service/TrainingDataExportServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/service/TrainingDataExportServiceTest.java
index f214f989..12523084 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/service/TrainingDataExportServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/service/TrainingDataExportServiceTest.java
@@ -67,6 +67,24 @@ class TrainingDataExportServiceTest {
         assertThat(zipEntryNames(zipBytes)).isNotEmpty();
     }
 
+    @Test
+    void export_excludesUnreviewedManualBlockFromEnrolledDocument() throws Exception {
+        // MANUAL blocks whose text hasn't been verified yet should not count as training data
+        UUID docId = enrolledDoc("unreviewed-manual.pdf");
+        UUID annotId = annotation(docId);
+        TranscriptionBlock block = TranscriptionBlock.builder()
+                .annotationId(annotId).documentId(docId)
+                .text("Liebe Tante").sortOrder(0)
+                .source(BlockSource.MANUAL).reviewed(false).build();
+        blockRepository.save(block);
+
+        FileService fileService = mockFileService();
+        TrainingDataExportService service = new TrainingDataExportService(blockRepository, annotationRepository, documentRepository, fileService);
+
+        StreamingResponseBody body = service.exportToZip();
+        assertThat(zipEntryNames(stream(body))).isEmpty();
+    }
+
     @Test
     void export_excludesManualBlockFromNonEnrolledDocument() throws Exception {
         UUID docId = nonEnrolledDoc("notenrolled.pdf");
@@ -212,7 +230,7 @@ class TrainingDataExportServiceTest {
         return TranscriptionBlock.builder()
                 .annotationId(annotId).documentId(docId)
                 .text(text).sortOrder(0)
-                .source(BlockSource.MANUAL).reviewed(false).build();
+                .source(BlockSource.MANUAL).reviewed(true).build();
     }
 
     private FileService mockFileService() {