diff --git a/src/cluster.c b/src/cluster.c
index d088b7976..d2740bb58 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -696,7 +696,7 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
         }
         connNonBlock(conn);
         connEnableTcpNoDelay(conn);
-        connKeepAlive(conn,server.cluster_node_timeout * 2);
+        connKeepAlive(conn,server.cluster_node_timeout / 1000 * 2);
 
         /* Use non-blocking I/O for cluster messages. */
         serverLog(LL_VERBOSE,"Accepting cluster node connection from %s:%d", cip, cport);