diff --git a/tests/micropython/ringio.py b/tests/micropython/ringio.py
index 45774bc2ee..a0102ef63d 100644
--- a/tests/micropython/ringio.py
+++ b/tests/micropython/ringio.py
@@ -45,4 +45,4 @@ try:
     # Size must be int.
     micropython.RingIO(None)
 except TypeError as ex:
-    print(ex)
+    print(type(ex))
diff --git a/tests/micropython/ringio.py.exp b/tests/micropython/ringio.py.exp
index b27ea472c7..65bae06472 100644
--- a/tests/micropython/ringio.py.exp
+++ b/tests/micropython/ringio.py.exp
@@ -13,4 +13,4 @@ b'\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01'
 16
 0
 b'\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01'
-can't convert NoneType to int
+<class 'TypeError'>