diff --git a/Resources/Prototypes/Damage/modifier_sets.yml b/Resources/Prototypes/Damage/modifier_sets.yml
index bf88837e8d..8a7b84ff1a 100644
--- a/Resources/Prototypes/Damage/modifier_sets.yml
+++ b/Resources/Prototypes/Damage/modifier_sets.yml
@@ -52,12 +52,9 @@
   id: PerforatedMetallic
   coefficients:
     Blunt: 2
-    Slash: 0.6
     Piercing: 0.2
-    Shock: 1.2
+    Shock: 0.6
   flatReductions:
-    Blunt: 5
-    Heat: 5
     Piercing: 10
 
 # for fragile electronics like consoles or shuttle engines.