diff --git a/app.py b/app.py
index ff1edd3..3ef2a67 100644
--- a/app.py
+++ b/app.py
@@ -20,6 +20,7 @@ app = Flask(__name__)
 loglevel = os.getenv("KI_LOGLEVEL", logging.WARNING)
 loglevel = int(loglevel)
 app.logger.setLevel(loglevel)
+app.logger.propagate = False # do not forward messages to the root logger
 logging.basicConfig(level=loglevel, format='[%(asctime)s] %(levelname)s [%(name)s] %(message)s') # configure root logger as fallback
 
 set_library_log_detail_level(BASIC)