diff --git a/sys/net/application_layer/rdcli/rdcli.c b/sys/net/application_layer/rdcli/rdcli.c
index fa3de115eb2a5..e24cbbc36b9f4 100644
--- a/sys/net/application_layer/rdcli/rdcli.c
+++ b/sys/net/application_layer/rdcli/rdcli.c
@@ -277,7 +277,7 @@ int rdcli_register(const sock_udp_ep_t *remote, const char *regif)
 
     /* add the resource description as payload */
     res = gcoap_get_resource_list(pkt.payload, pkt.payload_len,
-                                      COAP_FORMAT_LINK);
+                                  COAP_FORMAT_LINK);
     if (res < 0) {
         retval = RDCLI_ERR;
         goto end;