diff --git a/run.py b/run.py
index eea5fad11..e5aa6dad9 100644
--- a/run.py
+++ b/run.py
@@ -626,7 +626,7 @@ def connect_waves(waves: List[str]):
         try:
             waves_nparray, sampling_rate = connect_base64_waves(waves)
         except ConnectBase64WavesException as err:
-            return HTTPException(status_code=422, detail=str(err))
+            raise HTTPException(status_code=422, detail=str(err))
 
         with NamedTemporaryFile(delete=False) as f:
             soundfile.write(