diff --git a/Resources/Prototypes/Tiles/space.yml b/Resources/Prototypes/Tiles/space.yml
index 28da91051c..97a94447fe 100644
--- a/Resources/Prototypes/Tiles/space.yml
+++ b/Resources/Prototypes/Tiles/space.yml
@@ -2,4 +2,5 @@
   name: space
   display_name: Space
   texture: ""
-  friction: 0
\ No newline at end of file
+  friction: 0
+  is_subfloor: true
\ No newline at end of file