diff --git a/Lib/test/test_ctypes/test_callbacks.py b/Lib/test/test_ctypes/test_callbacks.py
index 19f4158c0ac846..64f92ffdca6a3f 100644
--- a/Lib/test/test_ctypes/test_callbacks.py
+++ b/Lib/test/test_ctypes/test_callbacks.py
@@ -148,9 +148,10 @@ def callback(a, b):
             print(f"a={a}, b={b}, c={c}")
             return c
         dll = cdll[_ctypes_test.__file__]
-        # With no fix for i38748, the next line will raise OSError and cause the test to fail.
-        self.assertEqual(dll._test_i38748_runCallback(callback, 5, 10), 15)
-
+        with support.captured_stdout() as out:
+            # With no fix for i38748, the next line will raise OSError and cause the test to fail.
+            self.assertEqual(dll._test_i38748_runCallback(callback, 5, 10), 15)
+            self.assertEqual(out.getvalue(), "a=5, b=10, c=15\n")
 
 if hasattr(ctypes, 'WINFUNCTYPE'):
     class StdcallCallbacks(Callbacks):