diff --git a/Resources/Prototypes/Entities/Structures/Storage/Canisters/gas_canisters.yml b/Resources/Prototypes/Entities/Structures/Storage/Canisters/gas_canisters.yml
index 897b7be6ffb..cd44f5f585a 100644
--- a/Resources/Prototypes/Entities/Structures/Storage/Canisters/gas_canisters.yml
+++ b/Resources/Prototypes/Entities/Structures/Storage/Canisters/gas_canisters.yml
@@ -74,7 +74,7 @@
             bounds: "-0.25,-0.25,0.25,0.25"
           density: 190
           mask:
-          - MachineMask
+          - SmallMobMask
           layer:
           - MachineLayer
     - type: AtmosDevice