diff --git a/Treemmer.py b/Treemmer.py
index 049e15654d8f37ae978c256f0c5604845275d123..e7355eb48aa6ee69c6a9b9c6e417aaccdaceff10 100644
--- a/Treemmer.py
+++ b/Treemmer.py
@@ -330,7 +330,7 @@ while (len(t) > 3):
 				break
 			
 		if arguments.stop_at_RTL:										# if stop criterium is met (RTL) ==> output
-			if arguments.stop_at_RTL >= rel_T:
+			if arguments.stop_at_RTL >= rel_TL:
 				output1=arguments.INFILE+"_trimmed_tree_RTL_" + str(arguments.stop_at_RTL)
 				output2=arguments.INFILE+"_trimmed_list_RTL_" + str(arguments.stop_at_RTL) 
 				write_stop(t,output1,output2)