diff --git a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
index 8a16081..c58fbc3 100644
--- a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
+++ b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
@@ -50,6 +50,13 @@ end
 local isRetail = WOW_PROJECT_ID == WOW_PROJECT_MAINLINE
 local isWrath = WOW_PROJECT_ID == WOW_PROJECT_WRATH_CLASSIC
 
+local InCombatLockdownRestriction
+if isRetail then
+  InCombatLockdownRestriction = InCombatLockdown
+else
+  InCombatLockdownRestriction = function() return false end
+end
+
 local _G = _G
 local next = next
 local sort = sort
@@ -555,7 +562,7 @@ end
 local checkers_Item = setmetatable({}, {
   __index = function(t, item)
     local func = function(unit)
-      if InCombatLockdown() then
+      if InCombatLockdownRestriction() then
         return nil
       else
         return IsItemInRange(item, unit) or nil
@@ -568,7 +575,7 @@ local checkers_Item = setmetatable({}, {
 local checkers_Interact = setmetatable({}, {
   __index = function(t, index)
     local func = function(unit)
-      if InCombatLockdown() then
+      if InCombatLockdownRestriction() then
         return nil
       else
         return CheckInteractDistance(unit, index) and true or false
@@ -750,20 +757,20 @@ local function getRange(unit, noItems)
   local canAssist = UnitCanAssist("player", unit)
   if UnitIsDeadOrGhost(unit) then
     if canAssist then
-      return getRangeWithCheckerList(unit, InCombatLockdown() and lib.resRCInCombat or lib.resRC)
+      return getRangeWithCheckerList(unit, InCombatLockdownRestriction() and lib.resRCInCombat or lib.resRC)
     else
-      return getRangeWithCheckerList(unit, InCombatLockdown() and lib.miscRCInCombat or lib.miscRC)
+      return getRangeWithCheckerList(unit, InCombatLockdownRestriction() and lib.miscRCInCombat or lib.miscRC)
     end
   end
 
   if UnitCanAttack("player", unit) then
-    if InCombatLockdown() then
+    if InCombatLockdownRestriction() then
       return getRangeWithCheckerList(unit, noItems and lib.harmNoItemsRCInCombat or lib.harmRCInCombat)
     else
       return getRangeWithCheckerList(unit, noItems and lib.harmNoItemsRC or lib.harmRC)
     end
   elseif UnitIsUnit("pet", unit) then
-    if InCombatLockdown() then
+    if InCombatLockdownRestriction() then
       local minRange, maxRange = getRangeWithCheckerList(unit, noItems and lib.friendNoItemsRCInCombat or lib.friendRCInCombat)
       if minRange or maxRange then
         return minRange, maxRange
@@ -779,13 +786,13 @@ local function getRange(unit, noItems)
       end
     end
   elseif canAssist then
-    if InCombatLockdown() then
+    if InCombatLockdownRestriction() then
       return getRangeWithCheckerList(unit, noItems and lib.friendNoItemsRCInCombat or lib.friendRCInCombat)
     else
       return getRangeWithCheckerList(unit, noItems and lib.friendNoItemsRC or lib.friendRC)
     end
   else
-    return getRangeWithCheckerList(unit, InCombatLockdown() and lib.miscRC or lib.miscRCInCombat)
+    return getRangeWithCheckerList(unit, InCombatLockdownRestriction() and lib.miscRC or lib.miscRCInCombat)
   end
 end
 
@@ -1594,7 +1601,7 @@ function lib:updateMeasurements()
       self.lastMeasurements[key] = curr
     end
   end
-  if not InCombatLockdown() then
+  if not InCombatLockdownRestriction() then
     for i, v in pairs(DefaultInteractList) do
       local key = "interact: " .. i
       local last = self.lastMeasurements[key]