diff --git a/testsuite/MDAnalysisTests/lib/test_nsgrid.py b/testsuite/MDAnalysisTests/lib/test_nsgrid.py
index d148a59ec3..de5445dc15 100644
--- a/testsuite/MDAnalysisTests/lib/test_nsgrid.py
+++ b/testsuite/MDAnalysisTests/lib/test_nsgrid.py
@@ -165,7 +165,7 @@ def test_nsgrid_PBC(universe):
                 23519,
                 23521,
                 23734,
-                47451,
+                47451
             ]
         )
         - 1