diff --git a/rrcf/rrcf.py b/rrcf/rrcf.py
index 3476739..a1d4799 100644
--- a/rrcf/rrcf.py
+++ b/rrcf/rrcf.py
@@ -616,7 +616,7 @@ def codisp(self, leaf):
         if leaf is self.root:
             return 0
         node = leaf
-        results = []
+        co_displacement = 0
         for _ in range(node.d):
             parent = node.u
             if parent is None:
@@ -627,10 +627,8 @@ def codisp(self, leaf):
                 sibling = parent.l
             num_deleted = node.n
             displacement = sibling.n
-            result = (displacement / num_deleted)
-            results.append(result)
+            co_displacement = max(co_displacement, displacement / num_deleted)
             node = parent
-        co_displacement = max(results)
         return co_displacement