diff --git a/test/config/chaosduck.yaml b/test/config/chaosduck.yaml
index 1feebcf177a6..107626a0bb43 100644
--- a/test/config/chaosduck.yaml
+++ b/test/config/chaosduck.yaml
@@ -86,6 +86,7 @@ spec:
         # Disable chaos on webhooks until https://github.com/knative/pkg/issues/1509 is
         # sorted out.
         - "-disable=webhook"
+        - "-disable=domainmapping-webhook"
         # Currently the new owner of Autoscaler needs time to build the
         # metrics status so some e2e tests are expected to fail if the
         # owner pod crashes.