diff --git a/game/modules/tome/data/timed_effects/mental.lua b/game/modules/tome/data/timed_effects/mental.lua
index 8dabca52f9f55f44fb834c254328ef64b9cf566e..d11b4acf4c5f77b9748a7247acc67bab512a1ad5 100644
--- a/game/modules/tome/data/timed_effects/mental.lua
+++ b/game/modules/tome/data/timed_effects/mental.lua
@@ -1465,7 +1465,7 @@ newEffect{
 	end,
 	deactivate = function(self, eff)
 		self:removeTemporaryValue("combat_mentalresist", eff.mindid)
-		self:removeTemporaryValue("combat_mindpower", eff.powid)
+		self:removeTemporaryValue("combat_mindpower", eff.powdid)
 	end,
 }