diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 2b1129a7a94a..93df833f34f4 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1128,7 +1128,7 @@ void *sctp_addto_chunk(struct sctp_chunk *chunk, int len, const void *data)
 	void *target;
 	void *padding;
 	int chunklen = ntohs(chunk->chunk_hdr->length);
-	int padlen = chunklen % 4;
+	int padlen = WORD_ROUND(chunklen) - chunklen;
 
 	padding = skb_put(chunk->skb, padlen);
 	target = skb_put(chunk->skb, len);