diff --git a/net/slirp.c b/net/slirp.c
index facc30ed18..b60893f9c5 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -131,7 +131,9 @@ static void net_slirp_cleanup(NetClientState *nc)
     SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
 
     slirp_cleanup(s->slirp);
-    qemu_remove_exit_notifier(&s->exit_notifier);
+    if (s->exit_notifier.notify) {
+        qemu_remove_exit_notifier(&s->exit_notifier);
+    }
     slirp_smb_cleanup(s);
     QTAILQ_REMOVE(&slirp_stacks, s, entry);
 }