diff --git a/scripts/effects/composure.lua b/scripts/effects/composure.lua
index b40ea0575e1..9721a9d5101 100644
--- a/scripts/effects/composure.lua
+++ b/scripts/effects/composure.lua
@@ -8,8 +8,10 @@ local effectObject = {}
 
 effectObject.onEffectGain = function(target, effect)
     local jpValue = target:getJobPointLevel(xi.jp.COMPOSURE_EFFECT)
+    local cLevel = target:getMainLevel()
+    local accPower = math.floor(((24 * cLevel) + 74) / 49)
 
-    target:addMod(xi.mod.ACC, 15 + jpValue)
+    target:addMod(xi.mod.ACC, accPower + jpValue)
 end
 
 effectObject.onEffectTick = function(target, effect)
@@ -17,8 +19,10 @@ end
 
 effectObject.onEffectLose = function(target, effect)
     local jpValue = target:getJobPointLevel(xi.jp.COMPOSURE_EFFECT)
+    local cLevel = target:getMainLevel()
+    local accPower = math.floor(((24 * cLevel) + 74) / 49)
 
-    target:delMod(xi.mod.ACC, 15 + jpValue)
+    target:delMod(xi.mod.ACC, accPower + jpValue)
 end
 
 return effectObject