1 files changed, 1 insertions, 1 deletions

diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 0fddc17106bd..5b71a289d04f 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -275,7 +275,7 @@ batadv_frag_merge_packets(struct hlist_head *chain)
         kfree(entry);
 
         packet = (struct batadv_frag_packet *)skb_out->data;
-        size = ntohs(packet->total_size);
+        size = ntohs(packet->total_size) + hdr_size;
 
         /* Make room for the rest of the fragments. */
         if (pskb_expand_head(skb_out, 0, size - skb_out->len, GFP_ATOMIC) < 0) {