diff --git a/Tools/autotest/arduplane.py b/Tools/autotest/arduplane.py
index e178a8c7db70c..5a17c5089db28 100644
--- a/Tools/autotest/arduplane.py
+++ b/Tools/autotest/arduplane.py
@@ -2924,6 +2924,7 @@ def Terrain(self):
     def TerrainLoiter(self):
         '''Test terrain following in loiter'''
         self.context_push()
+        self.install_terrain_handlers_context()
         self.set_parameters({
             "TERRAIN_FOLLOW": 1, # enable terrain following in loiter
             "WP_LOITER_RAD": 2000, # set very large loiter rad to get some terrain changes