diff --git a/IceStackCounter.lua b/IceStackCounter.lua
index 6e18f00..3f71813 100644
--- a/IceStackCounter.lua
+++ b/IceStackCounter.lua
@@ -128,7 +128,7 @@ end
 function IceStackCounter_Enable(frame)
 	frame:RegisterEvent("UNIT_AURA", "UpdateCustomCount")
 	frame:RegisterEvent("UNIT_PET", "UpdateCustomCount")
-	if IceHUD.WowVer < 80000 then
+	if IceHUD.WowVer < 80000 and not IceHUD.WowClassic then
 		frame:RegisterEvent("PLAYER_PET_CHANGED", "UpdateCustomCount")
 	end
 	if FocusUnit then