diff --git a/game/dcs/groundunittype.py b/game/dcs/groundunittype.py
index 2ab2418c..c0995381 100644
--- a/game/dcs/groundunittype.py
+++ b/game/dcs/groundunittype.py
@@ -57,7 +57,7 @@ class GroundUnitType(UnitType[Type[VehicleType]]):
 
     # Defines if we should place the ground unit with an inverted heading.
     # Some units like few Launchers have to be placed backwards to be able to fire.
-    reversed_heading: bool
+    reversed_heading: bool = False
 
     @classmethod
     def named(cls, name: str) -> GroundUnitType: