diff --git a/src/server.h b/src/server.h
index 9d3fc2d3..3ad19646 100644
--- a/src/server.h
+++ b/src/server.h
@@ -114,7 +114,7 @@ typedef long long mstime_t; /* millisecond time type. */
 #define CONFIG_DEFAULT_CLUSTER_ANNOUNCE_BUS_PORT 0      /* Use +10000 offset. */
 #define CONFIG_DEFAULT_DAEMONIZE 0
 #define CONFIG_DEFAULT_UNIX_SOCKET_PERM 0
-#define CONFIG_DEFAULT_TCP_KEEPALIVE 0
+#define CONFIG_DEFAULT_TCP_KEEPALIVE 300
 #define CONFIG_DEFAULT_PROTECTED_MODE 1
 #define CONFIG_DEFAULT_LOGFILE ""
 #define CONFIG_DEFAULT_SYSLOG_ENABLED 0