diff --git a/qt_ui/widgets/map/model/joinzonesjs.py b/qt_ui/widgets/map/model/joinzonesjs.py
index 810d0123..245ac398 100644
--- a/qt_ui/widgets/map/model/joinzonesjs.py
+++ b/qt_ui/widgets/map/model/joinzonesjs.py
@@ -5,6 +5,7 @@ from PySide2.QtCore import Property, QObject, Signal
 from game import Game
 from game.ato import Flight
 from game.flightplan import JoinZoneGeometry
+from .config import ENABLE_EXPENSIVE_DEBUG_TOOLS
 from .leaflet import LeafletLatLon, LeafletPoly
 from .shapelyutil import ShapelyUtil