diff --git a/KillTrack.lua b/KillTrack.lua
index 88a0ded..d07a086 100644
--- a/KillTrack.lua
+++ b/KillTrack.lua
@@ -22,6 +22,7 @@ local NAME, KT = ...
 _G[NAME] = KT
 
 -- Upvalue some functions used in CLEU
+local IsGUIDInGroup = IsGUIDInGroup
 local UnitGUID = UnitGUID
 local UnitIsTapDenied = UnitIsTapDenied
 local UnitTokenFromGUID = UnitTokenFromGUID