diff --git a/backend/services/impact_service.py b/backend/services/impact_service.py
index cd3d25b..d415fcb 100644
--- a/backend/services/impact_service.py
+++ b/backend/services/impact_service.py
@@ -127,16 +127,17 @@ def evaluate_event_impacts(
     all_cats = get_all_event_categories()
 
     def _find_cat(candidates):
+        """Returns (category_name, default_impacts) or (None, None)."""
         for c in candidates:
             if c is None:
                 continue
             row = next((x for x in all_cats if x["name"].lower() == c.lower()), None)
             if row:
                 try:
-                    return json.loads(row.get("default_impacts") or "[]")
+                    return row["name"], json.loads(row.get("default_impacts") or "[]")
                 except Exception:
                     pass
-        return None
+        return None, None
 
     sub  = (event.get("sub_type") or "").strip()
     cat  = (event.get("category") or "").strip()
@@ -153,7 +154,7 @@ def evaluate_event_impacts(
         elif row.get("type") == cat and not sub:
             candidates.append(row["name"])
 
-    category_defaults = _find_cat(candidates)
+    matched_cat_name, category_defaults = _find_cat(candidates)
 
     api_key = _get_api_key()
     if not api_key:
@@ -190,7 +191,7 @@ def evaluate_event_impacts(
             "source_id":     event_id,
             "source_name":   event["name"],
             "source_date":   event["start_date"],
-            "category_name": cat_name,
+            "category_name": matched_cat_name or sub or cat,
             "instrument_id": imp["instrument_id"],
             "impact_score":  float(imp.get("impact_score", 0.5)),
             "direction":     imp.get("direction", "neutral"),