diff --git a/src/server.c b/src/server.c
index a1f8eca78..d5b3ea690 100644
--- a/src/server.c
+++ b/src/server.c
@@ -4248,10 +4248,13 @@ int finishShutdown(void) {
     /* Close the listening sockets. Apparently this allows faster restarts. */
     closeListeningSockets(1);
 
+#if !defined(__sun)
     /* Unlock the cluster config file before shutdown */
     if (server.cluster_enabled && server.cluster_config_file_lock_fd != -1) {
         flock(server.cluster_config_file_lock_fd, LOCK_UN|LOCK_NB);
     }
+#endif /* __sun */
+
 
     serverLog(LL_WARNING,"%s is now ready to exit, bye bye...",
         server.sentinel_mode ? "Sentinel" : "Redis");