diff --git a/gio/tests/appmonitor.c b/gio/tests/appmonitor.c
index 0123ea59c..92bde18a9 100644
--- a/gio/tests/appmonitor.c
+++ b/gio/tests/appmonitor.c
@@ -91,7 +91,7 @@ timeout_cb (gpointer user_data)
 {
   gboolean *timed_out = user_data;
 
-  g_assert (!timed_out);
+  g_assert (!*timed_out);
   *timed_out = TRUE;
   g_main_context_wakeup (g_main_context_get_thread_default ());