diff --git a/glib/tests/protocol.c b/glib/tests/protocol.c
index 18ebe61d1..4713f3d0b 100644
--- a/glib/tests/protocol.c
+++ b/glib/tests/protocol.c
@@ -162,7 +162,11 @@ test_message (void)
   tlb = g_test_log_buffer_new ();
   loop = g_main_loop_new (NULL, FALSE);
 
+#ifdef G_OS_WIN32
+  channel = g_io_channel_win32_new_fd (pipes[0]);
+#else
   channel = g_io_channel_unix_new (pipes[0]);
+#endif
   g_io_channel_set_close_on_unref (channel, TRUE);
   g_io_channel_set_encoding (channel, NULL, NULL);
   g_io_channel_set_buffered (channel, FALSE);
@@ -285,7 +289,11 @@ test_error (void)
       tlb = g_test_log_buffer_new ();
       loop = g_main_loop_new (NULL, FALSE);
 
+#ifdef G_OS_WIN32
+      channel = g_io_channel_win32_new_fd (pipes[0]);
+#else
       channel = g_io_channel_unix_new (pipes[0]);
+#endif
       g_io_channel_set_close_on_unref (channel, TRUE);
       g_io_channel_set_encoding (channel, NULL, NULL);
       g_io_channel_set_buffered (channel, FALSE);