diff --git a/include/osmocom/gsm/protocol/gsm_09_02.h b/include/osmocom/gsm/protocol/gsm_09_02.h
index 0b54fb7..4d5ff13 100644
--- a/include/osmocom/gsm/protocol/gsm_09_02.h
+++ b/include/osmocom/gsm/protocol/gsm_09_02.h
@@ -1,8 +1,7 @@
 /*! \file gsm_09_02.h
  * GSM TS 09.02  definitions (MAP). */
 
-#ifndef PROTO_GSM_09_02_H
-#define PROTO_GSM_09_02_H
+#pragma once
 
 /* Section 17.7.4 */
 /* SS-Status */
@@ -134,5 +133,3 @@
 #define GSM0902_TS_CODE_PLMN_SPECIFIC_TS_C			0xDC
 #define GSM0902_TS_CODE_PLMN_SPECIFIC_TS_D			0xDD
 #define GSM0902_TS_CODE_PLMN_SPECIFIC_TS_E			0xDE
-
-#endif /* PROTO_GSM_09_02_H */