diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 3ec8b12..4e6b59e 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1185,6 +1185,9 @@
 	/* Enable PR-SCTP by default. */
 	sctp_prsctp_enable = 1;
 
+	/* Disable AUTH by default. */
+	sctp_auth_enable = 0;
+
 	sctp_sysctl_register();
 
 	INIT_LIST_HEAD(&sctp_address_families);