diff --git a/Tools/autotest/arduplane.py b/Tools/autotest/arduplane.py
index e04763c3fc..004f16737f 100644
--- a/Tools/autotest/arduplane.py
+++ b/Tools/autotest/arduplane.py
@@ -4200,7 +4200,7 @@ class AutoTestPlane(vehicle_test_suite.TestSuite):
         vinfo = vehicleinfo.VehicleInfo()
         vinfo_options = vinfo.options[self.vehicleinfo_key()]
         known_broken_frames = {
-            "plane-tailsitter": "does not take off; immediately emits 'AP: Transition VTOL done' while on ground",
+            "plane-tailsitter": "unstable in hover; unflyable in cruise",
             "plane-ice" : "needs ICE control channel for ignition",
             "quadplane-ice" : "needs ICE control channel for ignition",
             "quadplane-can" : "needs CAN periph",