diff --git a/sys/net/transport_layer/ng_udp/ng_udp.c b/sys/net/transport_layer/ng_udp/ng_udp.c
index a9daae16fe0a6c98092e2d8d2a03379730da88b3..b421a1dd6fc2b2c2d9a306980923598385b6e353 100644
--- a/sys/net/transport_layer/ng_udp/ng_udp.c
+++ b/sys/net/transport_layer/ng_udp/ng_udp.c
@@ -93,7 +93,6 @@ static void _receive(ng_pktsnip_t *pkt)
 {
     ng_pktsnip_t *udp, *ipv6;
     ng_udp_hdr_t *hdr;
-    uint16_t csum;
     uint32_t port;
     ng_netreg_entry_t *sendto;