diff --git a/app/services/search/classifier_service.py b/app/services/search/classifier_service.py
index a0c43ef..9661a48 100644
--- a/app/services/search/classifier_service.py
+++ b/app/services/search/classifier_service.py
@@ -113,7 +113,7 @@ async def classify(
         if _failure_count >= CIRCUIT_THRESHOLD:
             _circuit_open_until = time.time() + CIRCUIT_RECOVERY_SEC
             logger.error(f"classifier circuit OPEN for {CIRCUIT_RECOVERY_SEC}s")
-        logger.warning(f"classifier error: {e}")
+        logger.warning("classifier error: type=%s repr=%r", type(e).__name__, e)
         return ClassifierResult(
             "error", None, [], [],
             (time.perf_counter() - t_start) * 1000,