From 2923de5aefd4f721bde2965ce59445a13ae58927 Mon Sep 17 00:00:00 2001
From: Theo Sanderson <theo@sndrsn.co.uk>
Date: Fri, 29 Jul 2022 00:02:22 +0100
Subject: [PATCH] Update ushertools.py

---
 taxoniumtools/src/taxoniumtools/ushertools.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taxoniumtools/src/taxoniumtools/ushertools.py b/taxoniumtools/src/taxoniumtools/ushertools.py
index 908fa66b..b353d756 100644
--- a/taxoniumtools/src/taxoniumtools/ushertools.py
+++ b/taxoniumtools/src/taxoniumtools/ushertools.py
@@ -180,7 +180,7 @@ def preorder_traversal_internal(node):
     yield node
     for clade in node.children:
         for x in preorder_traversal_internal(clade):
-            if not x.children:
+            if not x.is_leaf():
                 yield x