diff --git a/tests/interpolate/test_geometry.py b/tests/interpolate/test_geometry.py
index 8dd4921107d..4fb2eabbf81 100644
--- a/tests/interpolate/test_geometry.py
+++ b/tests/interpolate/test_geometry.py
@@ -178,11 +178,13 @@ def test_find_nn_triangles_point():
     tri = Delaunay(pts)
 
     tri_match = tri.find_simplex([4.5, 4.5])
-    nn = find_nn_triangles_point(tri, tri_match, [4.5, 4.5])
+    nn = find_nn_triangles_point(tri, tri_match, (4.5, 4.5))
 
-    # Can't rely on simplex indices, so need to check point indices
-    truth = {(45, 55, 44), (55, 54, 44)}
-    assert {tuple(verts) for verts in tri.simplices[nn]} == truth
+    # Can't rely on simplex indices or the order of points that define them, so need to be a bit more involved to check
+    truth = [{45, 55, 44}, {55, 54, 44}]
+    found = [set(verts) for verts in tri.simplices[nn]]
+    for s in truth:
+        assert s in found
 
 
 def test_find_local_boundary():