diff --git a/main.lua b/main.lua
index dc1f4ee8..4a7cd50d 100644
--- a/main.lua
+++ b/main.lua
@@ -567,20 +567,29 @@ end
 EID:AddCallback(ModCallbacks.MC_POST_UPDATE, EID.onGameUpdate)
 
 local hasShownAchievementWarning = false
+
 local function renderAchievementInfo()
-	if REPENTANCE and not EID.Config.DisableAchievementCheck and game:GetFrameCount() < 10*30 and game.Challenge == 0 then
-		local characterID = Game():GetPlayer(0):GetPlayerType()
-		--ID 21 = Tainted Isaac. Tainted characters have definitely beaten Mom! (Fixes Tainted Lost's item pools ruining this check)
-		if (characterID < 21) then
-			local hasBookOfRevelationsUnlocked = EID:isCollectibleUnlockedAnyPool(CollectibleType.COLLECTIBLE_BOOK_OF_REVELATIONS or CollectibleType.COLLECTIBLE_BOOK_REVELATIONS)
-			if not hasBookOfRevelationsUnlocked then
-				local hasCubeOfMeatUnlocked = EID:isCollectibleUnlockedAnyPool(CollectibleType.COLLECTIBLE_CUBE_OF_MEAT)
-				if not hasCubeOfMeatUnlocked then
-					local demoDescObj = EID:getDescriptionObj(-999, -1, 1)
-					demoDescObj.Name = EID:getDescriptionEntry("AchievementWarningTitle") or ""
-					demoDescObj.Description = EID:getDescriptionEntry("AchievementWarningText") or ""
-					EID:displayPermanentText(demoDescObj)
-					hasShownAchievementWarning = true
+	if REPENTANCE and not EID.Config.DisableAchievementCheck and game:GetFrameCount() < 10*30 then
+		if EID:GetMaxCollectibleID() < EID.XMLMaxItemID then
+			local demoDescObj = EID:getDescriptionObj(-999, -1, 1)
+			demoDescObj.Name = EID:getDescriptionEntry("AchievementWarningTitle") or ""
+			demoDescObj.Description = EID:getDescriptionEntry("OutdatedModWarningText") or ""
+			EID:displayPermanentText(demoDescObj)
+			hasShownAchievementWarning = true
+		else
+			local characterID = Game():GetPlayer(0):GetPlayerType()
+			--ID 21 = Tainted Isaac. Tainted characters have definitely beaten Mom! (Fixes Tainted Lost's item pools ruining this check)
+			if characterID < 21 and game.Challenge == 0 then
+				local hasBookOfRevelationsUnlocked = EID:isCollectibleUnlockedAnyPool(CollectibleType.COLLECTIBLE_BOOK_OF_REVELATIONS or CollectibleType.COLLECTIBLE_BOOK_REVELATIONS)
+				if not hasBookOfRevelationsUnlocked then
+					local hasCubeOfMeatUnlocked = EID:isCollectibleUnlockedAnyPool(CollectibleType.COLLECTIBLE_CUBE_OF_MEAT)
+					if not hasCubeOfMeatUnlocked then
+						local demoDescObj = EID:getDescriptionObj(-999, -1, 1)
+						demoDescObj.Name = EID:getDescriptionEntry("AchievementWarningTitle") or ""
+						demoDescObj.Description = EID:getDescriptionEntry("AchievementWarningText") or ""
+						EID:displayPermanentText(demoDescObj)
+						hasShownAchievementWarning = true
+					end
 				end
 			end
 		end
@@ -609,7 +618,7 @@ local function onRender(t)
 	end
 	
 	EID:renderMCMDummyDescription()
-
+	
 	renderAchievementInfo()
 
 	if EID.GameVersion == "ab+" then
@@ -676,6 +685,7 @@ local function onRender(t)
 		end
 	end
 
+
 	local closest = EID.lastDescriptionEntity
 
 	if EID.lastDist / 40 > tonumber(EID.Config["MaxDistance"]) then