diff --git a/eos/effects/shipmodesmallmissiledamagepostdiv.py b/eos/effects/shipmodesmallmissiledamagepostdiv.py
index 7321f4848..406d7d92b 100644
--- a/eos/effects/shipmodesmallmissiledamagepostdiv.py
+++ b/eos/effects/shipmodesmallmissiledamagepostdiv.py
@@ -8,6 +8,9 @@ type = "passive"
 def handler(fit, module, context):
     types = ("thermal", "em", "explosive", "kinetic")
     for type in types:
-        fit.modules.filteredChargeBoost(
-            lambda mod: mod.charge.requiresSkill("Rockets") or mod.charge.requiresSkill("Light Missiles"),
-            "{}Damage".format(type), 1 / module.getModifiedItemAttr("modeDamageBonusPostDiv"))
+        fit.modules.filteredChargeMultiply(lambda mod: mod.charge.requiresSkill("Rockets") or
+                                                       mod.charge.requiresSkill("Light Missiles"),
+                                           "{}Damage".format(type),
+                                           1 / module.getModifiedItemAttr("modeDamageBonusPostDiv"),
+                                           stackingPenalties = True,
+                                           penaltyGroup="postDiv")