diff --git a/backend/pashub_fetcher/tests/test_core_files.py b/backend/pashub_fetcher/tests/test_core_files.py
index 7b991c23..f87d8679 100644
--- a/backend/pashub_fetcher/tests/test_core_files.py
+++ b/backend/pashub_fetcher/tests/test_core_files.py
@@ -141,3 +141,14 @@ def test_core_file_for_osm_pattern_returns_retrofit_design_doc_without_evidence_
 
     # Assert
     assert result == CoreFiles.RETROFIT_DESIGN_DOC
+
+
+def test_core_file_for_prefix_returns_photopack() -> None:
+    # Arrange
+    filename = "Photopack_123456_V1.pdf"
+
+    # Act
+    result = core_file_for(filename)
+
+    # Assert
+    assert result == CoreFiles.PHOTOPACK