diff --git a/app/__init__.py b/app/__init__.py
index 4431ff691..ecbae300e 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -31,6 +31,7 @@ import sqlalchemy
 from app.scodoc.sco_exceptions import (
     AccessDenied,
     ScoBugCatcher,
+    ScoException,
     ScoGenError,
     ScoValueError,
     APIInvalidParams,
@@ -92,9 +93,12 @@ def handle_sco_bug(exc):
     """Un bug, en général rare, sur lequel les dev cherchent des
     informations pour le corriger.
     """
-    Thread(
-        target=_async_dump, args=(current_app._get_current_object(), request.url)
-    ).start()
+    if current_app.config["TESTING"] or current_app.config["DEBUG"]:
+        raise ScoException  # for development servers only
+    else:
+        Thread(
+            target=_async_dump, args=(current_app._get_current_object(), request.url)
+        ).start()
 
     return internal_server_error(exc)