diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 17708fc..d69beaf 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1013,7 +1013,7 @@
 
 		nsrcs = skb_header_pointer(skb,
 					   len + offsetof(struct mld2_grec,
-							  grec_mca),
+							  grec_nsrcs),
 					   sizeof(_nsrcs), &_nsrcs);
 		if (!nsrcs)
 			return -EINVAL;