diff --git a/backend/pashub_fetcher/pashub_client.py b/backend/pashub_fetcher/pashub_client.py
index 20b8590d..11195960 100644
--- a/backend/pashub_fetcher/pashub_client.py
+++ b/backend/pashub_fetcher/pashub_client.py
@@ -87,6 +87,9 @@ class PashubClient:
             return None
 
     def _get_core_file_type(self, file: EvidenceFileData) -> Optional[CoreFiles]:
+        if file.evidence_category == "retrofit design":
+            return CoreFiles.RETROFIT_DESIGN_DOC
+
         for core_file in CoreFiles:
             if file.file_name.startswith(core_file.value):
                 return core_file