diff --git a/.luarc.json b/.luarc.json
index 34c8b4b..116a354 100644
--- a/.luarc.json
+++ b/.luarc.json
@@ -11,7 +11,8 @@
     "return-type-mismatch"
   ],
   "diagnostics.globals": [
-    "WOW_PROJECT_WRATH_CLASSIC",
+    "WOW_PROJECT_CLASSIC",
+    "WOW_PROJECT_CATACLYSM_CLASSIC",
     "BOOKTYPE_SPELL",
     "FriendColor",
     "HarmColor",
diff --git a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
index f23851a..9c8dd4b 100644
--- a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
+++ b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
@@ -49,6 +49,9 @@ if not lib then
 end
 
 local isRetail = WOW_PROJECT_ID == WOW_PROJECT_MAINLINE
+local isEra = WOW_PROJECT_ID == WOW_PROJECT_CLASSIC
+local isCata = WOW_PROJECT_ID == WOW_PROJECT_CATACLYSM_CLASSIC
+
 local InCombatLockdownRestriction = function(unit) return InCombatLockdown() and not UnitCanAttack("player", unit) end
 
 local _G = _G
@@ -1674,11 +1677,11 @@ function lib:activate()
     frame:RegisterEvent("CHARACTER_POINTS_CHANGED")
     frame:RegisterEvent("SPELLS_CHANGED")
 
-    if isEra or isWrath then
+    if isEra or isCata then
       frame:RegisterEvent("CVAR_UPDATE")
     end
 
-    if isRetail or isWrath then
+    if isRetail or isCata then
       frame:RegisterEvent("PLAYER_TALENT_UPDATE")
     end