diff --git a/gio/gtestdbus.c b/gio/gtestdbus.c
index 685503c..2fc2d51 100644
--- a/gio/gtestdbus.c
+++ b/gio/gtestdbus.c
@@ -179,7 +179,7 @@
       if (num_events == 0)
         continue;
 
-      if (fds[0].revents == G_IO_HUP)
+      if (fds[0].revents & G_IO_HUP)
         {
           /* Parent quit, cleanup the mess and exit */
           for (n = 0; n < pids_to_kill->len; n++)