diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 54edcd9..3ec8b12 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -84,9 +84,9 @@
 struct kmem_cache *sctp_chunk_cachep __read_mostly;
 struct kmem_cache *sctp_bucket_cachep __read_mostly;
 
-extern int sysctl_sctp_mem[3];
-extern int sysctl_sctp_rmem[3];
-extern int sysctl_sctp_wmem[3];
+int sysctl_sctp_mem[3];
+int sysctl_sctp_rmem[3];
+int sysctl_sctp_wmem[3];
 
 /* Return the address of the control sock. */
 struct sock *sctp_get_ctl_sock(void)