diff --git a/eos/effects/commandburstaoerolebonus.py b/eos/effects/commandburstaoerolebonus.py
index 747689bce..eddf8713e 100644
--- a/eos/effects/commandburstaoerolebonus.py
+++ b/eos/effects/commandburstaoerolebonus.py
@@ -12,4 +12,4 @@
 # Ship: Rorqual
 type = "passive"
 def handler(fit, src, context):
-    fit.modules.filteredItemBoost(lambda mod: mod.item.requiresSkill("Leadership"), "maxRange", src.getModifiedItemAttr("roleBonusCommandBurstAoERange"), stackingPenalties=True)
+    fit.modules.filteredItemBoost(lambda mod: mod.item.requiresSkill("Leadership"), "maxRange", src.getModifiedItemAttr("roleBonusCommandBurstAoERange"))
diff --git a/eos/effects/industrialbonusdronedamage.py b/eos/effects/industrialbonusdronedamage.py
index b9dd73ef4..db3fba01d 100644
--- a/eos/effects/industrialbonusdronedamage.py
+++ b/eos/effects/industrialbonusdronedamage.py
@@ -14,5 +14,5 @@ type = "passive"
 def handler(fit, src, context):
     fit.drones.filteredItemBoost(lambda drone: drone.item.requiresSkill("Drones"),
                                  "damageMultiplier",
-                                 src.getModifiedItemAttr("industrialBonusDroneDamage"), stackingPenalties = True)
+                                 src.getModifiedItemAttr("industrialBonusDroneDamage"))
 
diff --git a/eos/effects/zcolinorcatractorrangebonus.py b/eos/effects/zcolinorcatractorrangebonus.py
index 4aca08ea5..b2262a1e9 100644
--- a/eos/effects/zcolinorcatractorrangebonus.py
+++ b/eos/effects/zcolinorcatractorrangebonus.py
@@ -4,4 +4,4 @@
 # Ships from group: Industrial Command Ship (2 of 2)
 type = "passive"
 def handler(fit, src, context):
-    fit.modules.filteredItemBoost(lambda mod: mod.item.group.name == "Tractor Beam", "maxRange", src.getModifiedItemAttr("roleBonusTractorBeamRange"), stackingPenalties=True)
+    fit.modules.filteredItemBoost(lambda mod: mod.item.group.name == "Tractor Beam", "maxRange", src.getModifiedItemAttr("roleBonusTractorBeamRange"))