diff --git a/lib/ClientHandler.client.luau b/lib/ClientHandler.client.luau
index 6bf8c04..6f0e988 100644
--- a/lib/ClientHandler.client.luau
+++ b/lib/ClientHandler.client.luau
@@ -141,7 +141,7 @@ function ClientCast.new(Object, RaycastParameters, UniqueId)
 
 	local function OnDamagePointAdded(Attachment)
 		if
-			Attachment.ClassName == "Attachment"
+			Attachment:IsA("Attachment")
 			and Attachment.Name == Settings.AttachmentName
 			and not DamagePoints[Attachment]
 		then
diff --git a/lib/init.luau b/lib/init.luau
index 7b57cae..91b78d6 100644
--- a/lib/init.luau
+++ b/lib/init.luau
@@ -522,7 +522,7 @@ function ClientCast.new(Object, RaycastParameters, NetworkOwner)
 
 	local function OnDamagePointAdded(Attachment)
 		if
-			Attachment.ClassName == "Attachment"
+			Attachment:IsA("Attachment")
 			and Attachment.Name == Settings.AttachmentName
 			and not DamagePoints[Attachment]
 		then