diff --git a/RatingBuster.lua b/RatingBuster.lua
index 56932c4..de9eb91 100644
--- a/RatingBuster.lua
+++ b/RatingBuster.lua
@@ -3337,7 +3337,7 @@ end
 
 function RatingBuster:StatSummary(tooltip, link)
 	-- Hide stat summary for equipped items
-	if db.global.sumIgnoreEquipped and IsEquippedItem(link) then return end
+	if db.global.sumIgnoreEquipped and C_Item.IsEquippedItem(link) then return end
 
 	-- Show stat summary only for highest level armor type and items you can use with uncommon quality and up
 	if db.global.sumIgnoreUnused then
diff --git a/libs/StatLogic/StatLogic.lua b/libs/StatLogic/StatLogic.lua
index 654939c..a74d7a0 100644
--- a/libs/StatLogic/StatLogic.lua
+++ b/libs/StatLogic/StatLogic.lua
@@ -806,7 +806,7 @@ do
 	local function update_armor_slot(slot)
 		-- Set slot's bit to 0 if correct, else 1
 		local item = GetInventoryItemID("player", slot)
-		if item and select(7, GetItemInfoInstant(item)) == class_armor_specs[addon.class] then
+		if item and select(7, C_Item.GetItemInfoInstant(item)) == class_armor_specs[addon.class] then
 			armor_bits = bit.band(armor_bits, bit.bnot(bit.lshift(1, slot - 1)))
 		else
 			armor_bits = bit.bor(armor_bits, bit.lshift(1, slot - 1))
@@ -973,7 +973,7 @@ addon.StatModValidators = {
 		validate = function(case)
 			local weapon = GetInventoryItemID("player", 16)
 			if weapon then
-				local subclassID = select(7, GetItemInfoInstant(weapon))
+				local subclassID = select(7, C_Item.GetItemInfoInstant(weapon))
 				return subclassID and case.weapon[subclassID]
 			end
 		end,
@@ -1396,7 +1396,7 @@ do
 
 	function StatLogic:RemoveExtraSockets(link)
 		-- Only check belt, bracer and gloves
-		local itemEquipLoc = select(4, GetItemInfoInstant(link))
+		local itemEquipLoc = select(4, C_Item.GetItemInfoInstant(link))
 		if not extraSocketInvTypes[itemEquipLoc] then return link end
 
 		-- Count item's actual sockets
@@ -1515,7 +1515,7 @@ function StatLogic:GetGemID(item)
 	-- Scan tooltip for gem text
 	local gemScanLink = "item:6948:0:%d:0:0:0:0:0"
 	local itemLink = gemScanLink:format(itemID)
-	local _, gem1Link = GetItemGem(itemLink, 1)
+	local _, gem1Link = C_Item.GetItemGem(itemLink, 1)
 	if gem1Link then
 		tip:ClearLines() -- this is required or SetX won't work the second time its called
 		tip:SetHyperlink(itemLink);
diff --git a/libs/StatLogic/locales/GlobalPatterns.lua b/libs/StatLogic/locales/GlobalPatterns.lua
index 5abf252..ba3b35e 100644
--- a/libs/StatLogic/locales/GlobalPatterns.lua
+++ b/libs/StatLogic/locales/GlobalPatterns.lua
@@ -39,7 +39,7 @@ local exclusions = {
 	ITEM_DISENCHANT_NOT_DISENCHANTABLE,
 	ITEM_REQ_HORDE,
 	ITEM_REQ_ALLIANCE,
-	GetItemClassInfo(Enum.ItemClass.Projectile),
+	C_Item.GetItemClassInfo(Enum.ItemClass.Projectile),
 	INVTYPE_AMMO,
 	INVTYPE_HEAD,
 	INVTYPE_NECK,
@@ -84,8 +84,8 @@ local exclusions = {
 	ITEM_QUALITY5_DESC,
 	ITEM_QUALITY6_DESC,
 	ITEM_QUALITY7_DESC,
-	GetItemSubClassInfo(Enum.ItemClass.Weapon, Enum.ItemWeaponSubclass.Thrown),
-	GetItemSubClassInfo(Enum.ItemClass.Miscellaneous, Enum.ItemMiscellaneousSubclass.Mount)
+	C_Item.GetItemSubClassInfo(Enum.ItemClass.Weapon, Enum.ItemWeaponSubclass.Thrown),
+	C_Item.GetItemSubClassInfo(Enum.ItemClass.Miscellaneous, Enum.ItemMiscellaneousSubclass.Mount)
 }
 
 for _, exclusion in pairs(exclusions) do
@@ -93,7 +93,7 @@ for _, exclusion in pairs(exclusions) do
 end
 
 for _, subclass in pairs(Enum.ItemArmorSubclass) do
-	local subclassName = GetItemSubClassInfo(Enum.ItemClass.Armor, subclass)
+	local subclassName = C_Item.GetItemSubClassInfo(Enum.ItemClass.Armor, subclass)
 	if subclassName then
 		W[subclassName] = false
 	end