diff --git a/spine-lua/attachments/PathAttachment.lua b/spine-lua/attachments/PathAttachment.lua
index d94d2a43b..9b16aede6 100644
--- a/spine-lua/attachments/PathAttachment.lua
+++ b/spine-lua/attachments/PathAttachment.lua
@@ -50,7 +50,7 @@ end
 
 function PathAttachment:copy ()
   local copy = PathAttachment.new(self.name)
-  self.copyTo(copy)
+  self:copyTo(copy)
   copy.length = utils.copy(self.lengths)
   copy.closed = self.closed
   copy.constantSpeed = self.constantSpeed