diff --git a/xnd/python/test_xnd.py b/xnd/python/test_xnd.py
index 9c0c8cb..784dfd6 100644
--- a/xnd/python/test_xnd.py
+++ b/xnd/python/test_xnd.py
@@ -3096,10 +3096,11 @@ def test_endian(self):
             'h', 'i', 'l', 'q',
             'H', 'I', 'L', 'Q',
             'f', 'd',
+            'F', 'D',
         ]
 
         if HAVE_PYTHON_36:
-            standard += 'e'
+            standard += ['e']
 
         modifiers = ['', '<', '>']
 
@@ -3132,6 +3133,24 @@ def test_readonly(self):
         self.assertEqual(x.tolist(), [1000, 2000, 3000])
         check_copy_contiguous(self, y)
 
+    @unittest.skipIf(np is None, "numpy not found")
+    def test_complex(self):
+        x = xnd([1, 2, 3], dtype="complex64")
+        y = np.array(x)
+        self.assertEqual(memoryview(y).format, "Zf")
+
+        x = xnd([1, 2, 3], dtype="complex128")
+        y = np.array(x)
+        self.assertEqual(memoryview(y).format, "Zd")
+
+        x = np.array([1, 2, 3], dtype="complex64")
+        y = xnd.from_buffer(x)
+        self.assertEqual(memoryview(y).format, "=Zf")
+
+        x = np.array([1, 2, 3], dtype="complex128")
+        y = xnd.from_buffer(x)
+        self.assertEqual(memoryview(y).format, "=Zd")
+
 
 class TestReshape(XndTestCase):