diff --git a/src/Modules/BuildDisplayStats.lua b/src/Modules/BuildDisplayStats.lua
index 1b4061e5dc..b8463431fd 100644
--- a/src/Modules/BuildDisplayStats.lua
+++ b/src/Modules/BuildDisplayStats.lua
@@ -245,4 +245,4 @@ local extraSaveStats = {
 	"ActiveMinionLimit",
 }
 
-return displayStats, minionDisplayStats, extraSaveStats
\ No newline at end of file
+return displayStats, minionDisplayStats, extraSaveStats
diff --git a/src/Modules/CalcDefence.lua b/src/Modules/CalcDefence.lua
index 0c349cd1bc..7adacd0b6e 100644
--- a/src/Modules/CalcDefence.lua
+++ b/src/Modules/CalcDefence.lua
@@ -3246,18 +3246,13 @@ function calcs.buildDefenceEstimations(env, actor)
 			end
 		end
 
-		-- second minimum used for power calcs, as there are issues using average or minimum
-		local minimum = m_huge
-		local SecondMinimum = m_huge
+		-- harmonic mean used for power calcs (equivalent to the maximum hit when the hit is equally split between all damage types)
+		-- ideally there should be weights to account for the fact that damage types usually have different scales (phys hits are smaller than ele hits)
+		local reciprocalSum = 0
 		for _, damageType in ipairs(dmgTypeList) do
-			if output[damageType.."MaximumHitTaken"] < minimum then
-				SecondMinimum = minimum
-				minimum = output[damageType.."MaximumHitTaken"]
-			elseif output[damageType.."MaximumHitTaken"] < SecondMinimum then
-				SecondMinimum = output[damageType.."MaximumHitTaken"]
-			end
+			reciprocalSum = reciprocalSum + 1 / output[damageType .. "MaximumHitTaken"]
 		end
-		output.SecondMinimalMaximumHitTaken = SecondMinimum
+		output.EffectiveMaximumHitTaken = 5 / reciprocalSum
 	end
 
 	-- effective health pool vs dots
diff --git a/src/Modules/Data.lua b/src/Modules/Data.lua
index be484e0c32..05537f2ec9 100644
--- a/src/Modules/Data.lua
+++ b/src/Modules/Data.lua
@@ -142,7 +142,7 @@ data.powerStatList = {
 	{ stat="SpellAvoidChance", label="Spell avoid chance" },
 	{ stat="ProjectileAvoidChance", label="Projectile avoid chance" },
 	{ stat="TotalEHP", label="Effective Hit Pool" },
-	{ stat="SecondMinimalMaximumHitTaken", label="Eff. Maximum Hit Taken" },
+	{ stat="EffectiveMaximumHitTaken", label="Eff. Maximum Hit Taken" },
 	{ stat="PhysicalTakenHit", label="Taken Phys dmg", transform=function(value) return -value end },
 	{ stat="LightningTakenHit", label="Taken Lightning dmg", transform=function(value) return -value end },
 	{ stat="ColdTakenHit", label="Taken Cold dmg", transform=function(value) return -value end },