diff --git a/smarts/core/chassis.py b/smarts/core/chassis.py
index f6639facf4..009da9f3e7 100644
--- a/smarts/core/chassis.py
+++ b/smarts/core/chassis.py
@@ -226,7 +226,7 @@ def __init__(
             self._bullet_body, bullet_client
         )
         bullet_client.setCollisionFilterGroupMask(
-            self._bullet_body._bullet_id, -1, 0x0, 0x0
+            self._bullet_body._bullet_id, -1, 0x1, 0x1
         )
         self._pose = None
         self.control(pose, speed)