diff --git a/Resources/Prototypes/Entities/weapons/projectiles.yml b/Resources/Prototypes/Entities/weapons/projectiles.yml
index db49558a8c..1c3d99de7b 100644
--- a/Resources/Prototypes/Entities/weapons/projectiles.yml
+++ b/Resources/Prototypes/Entities/weapons/projectiles.yml
@@ -17,3 +17,4 @@
   - type: Projectile
   - type: Collidable
     hard: false
+    mask: 3