diff --git a/sys/include/net/gnrc/netreg.h b/sys/include/net/gnrc/netreg.h
index dba155d72a..9b2e5a7579 100644
--- a/sys/include/net/gnrc/netreg.h
+++ b/sys/include/net/gnrc/netreg.h
@@ -149,25 +149,6 @@ gnrc_netreg_entry_t *gnrc_netreg_getnext(gnrc_netreg_entry_t *entry);
 
 int gnrc_netreg_calc_csum(gnrc_pktsnip_t *hdr, gnrc_pktsnip_t *pseudo_hdr);
 
-/**
- * @brief   Builds a header for sending and adds it to the packet buffer.
- *
- * @param[in] type      Type of the header.
- * @param[in] payload   Payload for the packet.
- * @param[in] src       Source address for the header. Can be NULL if not
- *                      known or required.
- * @param[in] src_len   Length of @p src. Can be 0 if not known or required.
- * @param[in] dst       Destination address for the header. Can be NULL if not
- *                      known or required.
- * @param[in] dst_len   Length of @p dst. Can be 0 if not known or required.
- *
- * @return  The header for the protocol on success.
- * @return  NULL on error.
- */
-gnrc_pktsnip_t *gnrc_netreg_hdr_build(gnrc_nettype_t type, gnrc_pktsnip_t *payload,
-                                      uint8_t *src, uint8_t src_len,
-                                      uint8_t *dst, uint8_t dst_len);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/sys/net/gnrc/netreg/gnrc_netreg.c b/sys/net/gnrc/netreg/gnrc_netreg.c
index b81de9b01f..495b063157 100644
--- a/sys/net/gnrc/netreg/gnrc_netreg.c
+++ b/sys/net/gnrc/netreg/gnrc_netreg.c
@@ -136,49 +136,4 @@ int gnrc_netreg_calc_csum(gnrc_pktsnip_t *hdr, gnrc_pktsnip_t *pseudo_hdr)
     }
 }
 
-gnrc_pktsnip_t *gnrc_netreg_hdr_build(gnrc_nettype_t type, gnrc_pktsnip_t *payload,
-                                      uint8_t *src, uint8_t src_len,
-                                      uint8_t *dst, uint8_t dst_len)
-{
-    switch (type) {
-#ifdef MODULE_GNRC_IPV6
-
-        case GNRC_NETTYPE_IPV6:
-            assert(src_len == sizeof(ipv6_addr_t));
-            assert(dst_len == sizeof(ipv6_addr_t));
-            return gnrc_ipv6_hdr_build(payload, (ipv6_addr_t*) src, (ipv6_addr_t*) dst);
-#endif
-#ifdef MODULE_GNRC_TCP
-
-        case GNRC_NETTYPE_TCP:
-            {
-            assert(src_len == sizeof(uint16_t));
-            assert(dst_len == sizeof(uint16_t));
-            uint16_t src_port = *((uint16_t *)src);
-            uint16_t dst_port = *((uint16_t *)dst);
-            return gnrc_tcp_hdr_build(payload, src_port, dst_port);
-            }
-#endif
-#ifdef MODULE_GNRC_UDP
-
-        case GNRC_NETTYPE_UDP:
-            {
-            assert(src_len == sizeof(uint16_t));
-            assert(dst_len == sizeof(uint16_t));
-            uint16_t src_port = *((uint16_t *)src);
-            uint16_t dst_port = *((uint16_t *)dst);
-            return gnrc_udp_hdr_build(payload, src_port, dst_port);
-            }
-#endif
-
-        default:
-            (void)payload;
-            (void)src;
-            (void)src_len;
-            (void)dst;
-            (void)dst_len;
-            return NULL;
-    }
-}
-
 /** @} */