diff -uNr wireshark-2.6.1/epan/dissectors/packet-gtp.c wireshark-2.6.1.mod/epan/dissectors/packet-gtp.c
--- wireshark-2.6.1/epan/dissectors/packet-gtp.c	2018-05-22 21:53:08.000000000 +0300
+++ wireshark-2.6.1.mod/epan/dissectors/packet-gtp.c	2018-06-26 20:34:32.368621631 +0300
@@ -2358,7 +2358,7 @@
 /* Next definitions and function check_field_presence checks if given field
  * in GTP packet is compliant with ETSI
  */
-typedef struct _header {
+typedef struct _ext_header {
     guint8 code;
     guint8 presence;
 } ext_header;