diff --git a/Resources/Prototypes/Entities/Constructible/Doors/firelock.yml b/Resources/Prototypes/Entities/Constructible/Doors/firelock.yml
index a9bd8b3f3d..d3505ce7c8 100644
--- a/Resources/Prototypes/Entities/Constructible/Doors/firelock.yml
+++ b/Resources/Prototypes/Entities/Constructible/Doors/firelock.yml
@@ -94,8 +94,8 @@
         - East
     - type: Physics
       shapes:
-        - !type:PhysShapeAabb
-          bounds: "-0.49,-0.49,-0.2,0.49" # don't want this colliding with walls or they won't close
+        - !type:PhysShapeRect
+          bounds: "0.49,-0.49,-0.49,-0.2" # don't want this colliding with walls or they won't close
           mask:
             - MobImpassable
           layer: