diff --git a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
index b0225b65ca3518154ee33f69ffb57a8378f043e8..98267b0d2a47682b034e60104799f8062797c5ba 100644
--- a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
+++ b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
@@ -194,6 +194,7 @@ static void pptp_destroy_siblings(struct ip_conntrack *ct)
 {
 	struct ip_conntrack_tuple t;
 
+	ip_ct_gre_keymap_destroy(ct);
 	/* Since ct->sibling_list has literally rusted away in 2.6.11,
 	 * we now need another way to find out about our sibling
 	 * contrack and expects... -HW */