diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 5cc9636e46e9..d449fa47491c 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -295,6 +295,7 @@ static int epaddr_len(struct nf_conn *ct, const char *dptr,
 static int skp_epaddr_len(struct nf_conn *ct, const char *dptr,
 			  const char *limit, int *shift)
 {
+	const char *start = dptr;
 	int s = *shift;
 
 	/* Search for @, but stop at the end of the line.
@@ -309,8 +310,10 @@ static int skp_epaddr_len(struct nf_conn *ct, const char *dptr,
 	if (dptr <= limit && *dptr == '@') {
 		dptr++;
 		(*shift)++;
-	} else
+	} else {
+		dptr = start;
 		*shift = s;
+	}
 
 	return epaddr_len(ct, dptr, limit, shift);
 }