diff --git a/test/unit/test_shapetracker_math.py b/test/unit/test_shapetracker_math.py
index d25807c1e1..893764aee6 100644
--- a/test/unit/test_shapetracker_math.py
+++ b/test/unit/test_shapetracker_math.py
@@ -22,7 +22,7 @@ def st_equal(st1, st2) -> bool:
   idx = Variable("idx", 0, prod(st1.shape)-1)
   st1_idx, st1_valid = st1.expr_node(idx)
   st2_idx, st2_valid = st2.expr_node(idx)
-  for i in range(idx.min, idx.max):
+  for i in range(idx.min, idx.max + 1):
     st1_off = sym_infer(st1_idx, {idx: i})
     st2_off = sym_infer(st2_idx, {idx: i})
     st1_v = sym_infer(st1_valid, {idx: i})
@@ -84,6 +84,13 @@ class TestShapeTrackerAdd(unittest.TestCase):
     st.reshape( (4, 3) )
     assert st_equal(backup + st.sts[1], st.sts[0])
 
+  def test_off_by_one(self):
+    st1 = ShapeTracker(views=(View(shape=(5,), strides=(1,), offset=0, mask=None, contiguous=True),
+                              View(shape=(5,), strides=(1,), offset=0, mask=None, contiguous=True)))
+    st2 = ShapeTracker(views=(View(shape=(4,), strides=(1,), offset=0, mask=None, contiguous=True),
+                              View(shape=(5,), strides=(1,), offset=0, mask=None, contiguous=True)))
+    assert not (st_equal(st1, st2))
+
 class TestShapeTrackerAddVariable(unittest.TestCase):
   def test_self_add(self):
     j = Variable("j", 0, 20).bind(10)