diff --git a/Resources/Prototypes/Entities/Structures/Storage/Crates/base_structurecrates.yml b/Resources/Prototypes/Entities/Structures/Storage/Crates/base_structurecrates.yml
index 0a299e5144..4d01a33ce0 100644
--- a/Resources/Prototypes/Entities/Structures/Storage/Crates/base_structurecrates.yml
+++ b/Resources/Prototypes/Entities/Structures/Storage/Crates/base_structurecrates.yml
@@ -27,7 +27,7 @@
         bounds: "-0.4,-0.4,0.4,0.29"
       mass: 25
       mask:
-      - MachineMask
+      - SmallMobMask #this is so they can go under plastic flaps
       layer:
       - MachineLayer
   - type: EntityStorage
@@ -90,7 +90,7 @@
         bounds: "-0.4,-0.4,0.4,0.29"
       mass: 25
       mask:
-      - MachineMask
+      - SmallMobMask
       layer:
       - MachineLayer
   - type: EntityStorage