diff --git a/nac3standalone/demo/src/ndarray.py b/nac3standalone/demo/src/ndarray.py
index 568f0625..bdfa56ad 100644
--- a/nac3standalone/demo/src/ndarray.py
+++ b/nac3standalone/demo/src/ndarray.py
@@ -199,6 +199,27 @@ def test_ndarray_nd_idx():
     output_float64(x[1, 0])
     output_float64(x[1, 1])
 
+def test_ndarray_subscript_assignment():
+    xs = np_array([[11111.0, 2.0, 3.0], [4.0, 5.0, 6.0], [7.0, 8.0, 99999.0]])
+    output_ndarray_float_2(xs)
+
+    output_int32(np_shape(xs[1:, 1::])[0])
+    output_int32(np_shape(xs[1:, 1::])[1])
+    xs[1:, 1::] = 77.0
+    output_ndarray_float_2(xs)
+
+    xs[0, -1] = 88.0
+    output_ndarray_float_2(xs)
+
+    ys = np_transpose(xs)[1::-1]
+    ys[0] = np_array([44.0, 55.0, 66.0])
+    output_ndarray_float_2(xs)
+    output_ndarray_float_2(ys)
+
+    zs = np_reshape(xs, (-1,))
+    zs[2:5] = np_array([1000.0, 2000.0, 3000.0])
+    output_ndarray_float_2(xs)
+
 def test_ndarray_add():
     x = np_identity(2)
     y = x + np_ones([2, 2])
@@ -1641,6 +1662,7 @@ def run() -> int32:
     test_ndarray_neg_idx()
     test_ndarray_slices()
     test_ndarray_nd_idx()
+    test_ndarray_subscript_assignment()
 
     test_ndarray_add()
     test_ndarray_add_broadcast()