diff --git a/src/actions/RoleAction.lua b/src/actions/RoleAction.lua
index 35afa44..35b5ca1 100644
--- a/src/actions/RoleAction.lua
+++ b/src/actions/RoleAction.lua
@@ -1409,7 +1409,7 @@ function _M.goldBuyRpc(agent, data)
 	local maxCount = maxIdx + role:getBnousUpSpeedNum(UpSpeedType.GearUpSpeed)
 	if curT > maxCount then return end
 	if curT > maxIdx then
-		for idx = maxIdx+1, curCount do
+		for idx = maxIdx+1, curT do
 			costs[idx] = costs[maxIdx]
 		end
 	end
--
libgit2 0.21.2