diff --git a/src/therapy/query.py b/src/therapy/query.py
index 386b62c4..67fa4720 100644
--- a/src/therapy/query.py
+++ b/src/therapy/query.py
@@ -369,7 +369,7 @@ def _add_merged_meta(self, response: NormalizationService) -> NormalizationServi
 
         for src in sources:
             if src not in sources_meta:
-                sources_meta[src] = self.db.get_source_metadata(src)
+                sources_meta[SourceName[src.upper()]] = self.db.get_source_metadata(src)
         response.source_meta_ = sources_meta  # type: ignore[assignment]
         return response