diff --git a/init.lua b/init.lua
index 88e8a55..a656121 100644
--- a/init.lua
+++ b/init.lua
@@ -94,6 +94,9 @@ function progress_tree.new_player_data(tree, learned)
 	
 	return data
 end
+
+
+tree_methods.new_player_data = progress_tree.new_player_data
 		
 
 -- Serialization to a string
@@ -112,6 +115,9 @@ function progress_tree.deserialize_player_data(tree, learned_string)
 end
 
 
+tree_methods.deserialize_player_data = progress_tree.deserialize_player_data
+
+
 -- Tells whether the tech is already learned
 function pd_methods.knows(self, name)
 	return self.learned[name] == true -- Want false when not in