diff --git a/src/actions/HeroAction.lua b/src/actions/HeroAction.lua
index 7cc2829..7a2a593 100644
--- a/src/actions/HeroAction.lua
+++ b/src/actions/HeroAction.lua
@@ -75,7 +75,7 @@ function _M.skillUpRpc(agent, data)
 	local hero = role.heros[msg.id]
 	if not hero then return end
 	local curLevel = hero:getSkillLevel(index)
-	if hero:getLSPoint() < 0 or curLevel >= #hero:getSkillData(index) then return end
+	if hero:getLSPoint() <= 0 or curLevel >= #hero:getSkillData(index) then return end
 	hero:updateProperty({field = "skillL", value = hero:getProperty("skillL"):setv(index, curLevel + 1)})
 
 	SendPacket(actionCodes.Hero_skillUpRpc, '')
--
libgit2 0.21.2