diff --git a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
index 55aa52c..0265dd5 100644
--- a/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
+++ b/LibRangeCheck-3.0/LibRangeCheck-3.0.lua
@@ -40,7 +40,7 @@ License: MIT
 -- @class file
 -- @name LibRangeCheck-3.0
 local MAJOR_VERSION = "LibRangeCheck-3.0"
-local MINOR_VERSION = 17
+local MINOR_VERSION = 18
 
 ---@class lib
 local lib, oldminor = LibStub:NewLibrary(MAJOR_VERSION, MINOR_VERSION)
@@ -76,7 +76,15 @@ local UnitIsUnit = UnitIsUnit
 local UnitGUID = UnitGUID
 local UnitIsDeadOrGhost = UnitIsDeadOrGhost
 local CheckInteractDistance = CheckInteractDistance
-local IsSpellInRange = IsSpellInRange or C_Spell.IsSpellInRange
+local IsSpellInRange = IsSpellInRange or function(id)
+  local result = C_Spell.IsSpellInRange(id)
+  if result == true then
+    return 1
+  elseif result == false then
+    return 0
+  end
+  return nil
+end
 local UnitClass = UnitClass
 local UnitRace = UnitRace
 local GetInventoryItemLink = GetInventoryItemLink