diff --git a/eden/scm/sapling/ext/tweakdefaults.py b/eden/scm/sapling/ext/tweakdefaults.py
index 480541dede9c9..617ced6661e40 100644
--- a/eden/scm/sapling/ext/tweakdefaults.py
+++ b/eden/scm/sapling/ext/tweakdefaults.py
@@ -168,7 +168,7 @@ def _analyzewrap(orig, x):
             "tweakdefaults: _computeobsoletenotrebased or "
             + "_checkobsrebase are not what we expect them to be"
         )
-        ui.warning(msg)
+        ui.warn(msg)
 
     try:
         remotenames = extensions.find("remotenames")