diff --git a/backend/src/test/java/org/raddatz/familienarchiv/importing/MassImportServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/importing/MassImportServiceTest.java
index 167b78cd..0fb50a8e 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/importing/MassImportServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/importing/MassImportServiceTest.java
@@ -512,6 +512,18 @@ class MassImportServiceTest {
         assertThat(result).isFalse();
     }
 
+    @Test
+    void isValidImportFilename_returnsTrue_whenFilenameHasLeadingDot() {
+        boolean result = ReflectionTestUtils.invokeMethod(service, "isValidImportFilename", ".hidden.pdf");
+        assertThat(result).isTrue();
+    }
+
+    @Test
+    void isValidImportFilename_returnsTrue_whenFilenameHasSpaces() {
+        boolean result = ReflectionTestUtils.invokeMethod(service, "isValidImportFilename", "Brief an Oma.pdf");
+        assertThat(result).isTrue();
+    }
+
     @Test
     void processRows_skipsRowAndContinues_whenFilenameIsPathTraversal() {
         when(documentService.findByOriginalFilename("legitimate.pdf")).thenReturn(Optional.empty());