diff --git a/tests/test_trajectory_utils.py b/tests/test_trajectory_utils.py
index 2b209a5c..88410e2c 100644
--- a/tests/test_trajectory_utils.py
+++ b/tests/test_trajectory_utils.py
@@ -187,7 +187,7 @@ def test_avg_trajectory_distance(self):
 
         # A list of empty times is invalid.
         with self.assertRaises(ValueError):
-            _ = ave_trajectory_distance(trjA, trjC, [])
+            _ = avg_trajectory_distance(trjA, trjC, [])
 
     def test_match_trajectory_sets(self):
         queries = [