diff --git a/util/config/oauth.py b/util/config/oauth.py
index 4e01f713e..e28ca73f5 100644
--- a/util/config/oauth.py
+++ b/util/config/oauth.py
@@ -265,7 +265,7 @@ class OIDCConfig(OAuthConfig):
     self._http_client = config['HTTPCLIENT']
 
     if self.config.get('OIDC_SERVER'):
-      self._load_via_discovery(config['DEBUGGING'])
+      self._load_via_discovery(config.get('DEBUGGING', False))
 
   def _load_via_discovery(self, is_debugging):
     oidc_server = self.config['OIDC_SERVER']