diff --git a/include/drivers/auth/auth_common.h b/include/drivers/auth/auth_common.h
index 058375f..e6859fd 100644
--- a/include/drivers/auth/auth_common.h
+++ b/include/drivers/auth/auth_common.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __AUTH_COMMON_H__
-#define __AUTH_COMMON_H__
+#ifndef AUTH_COMMON_H
+#define AUTH_COMMON_H
 
 /*
  * Authentication framework common types
@@ -117,4 +117,4 @@
 		.len = (unsigned int)_len \
 	}
 
-#endif /* __AUTH_COMMON_H__ */
+#endif /* AUTH_COMMON_H */
diff --git a/include/drivers/auth/auth_mod.h b/include/drivers/auth/auth_mod.h
index bb3b8f9..19bc2f1 100644
--- a/include/drivers/auth/auth_mod.h
+++ b/include/drivers/auth/auth_mod.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __AUTH_MOD_H__
-#define __AUTH_MOD_H__
+#ifndef AUTH_MOD_H
+#define AUTH_MOD_H
 
 #if TRUSTED_BOARD_BOOT
 
@@ -49,4 +49,4 @@
 
 #endif /* TRUSTED_BOARD_BOOT */
 
-#endif /* __AUTH_MOD_H__ */
+#endif /* AUTH_MOD_H */
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h
index f9b44d1..3a42105 100644
--- a/include/drivers/auth/crypto_mod.h
+++ b/include/drivers/auth/crypto_mod.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __CRYPTO_MOD_H__
-#define __CRYPTO_MOD_H__
+#ifndef CRYPTO_MOD_H
+#define CRYPTO_MOD_H
 
 /* Return values */
 enum crypto_ret_value {
@@ -59,4 +59,4 @@
 
 extern const crypto_lib_desc_t crypto_lib_desc;
 
-#endif /* __CRYPTO_MOD_H__ */
+#endif /* CRYPTO_MOD_H */
diff --git a/include/drivers/auth/img_parser_mod.h b/include/drivers/auth/img_parser_mod.h
index eaf3e6e..4379693 100644
--- a/include/drivers/auth/img_parser_mod.h
+++ b/include/drivers/auth/img_parser_mod.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __IMG_PARSER_MOD_H__
-#define __IMG_PARSER_MOD_H__
+#ifndef IMG_PARSER_MOD_H
+#define IMG_PARSER_MOD_H
 
 #include <auth_common.h>
 
@@ -61,4 +61,4 @@
 		.get_auth_param = _get_param \
 	}
 
-#endif /* __IMG_PARSER_MOD_H__ */
+#endif /* IMG_PARSER_MOD_H */
diff --git a/include/drivers/auth/mbedtls/mbedtls_common.h b/include/drivers/auth/mbedtls/mbedtls_common.h
index 5d3e198..a9c2352 100644
--- a/include/drivers/auth/mbedtls/mbedtls_common.h
+++ b/include/drivers/auth/mbedtls/mbedtls_common.h
@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __MBEDTLS_COMMON_H__
-#define __MBEDTLS_COMMON_H__
+#ifndef MBEDTLS_COMMON_H
+#define MBEDTLS_COMMON_H
 
 void mbedtls_init(void);
 
-#endif /* __MBEDTLS_COMMON_H__ */
+#endif /* MBEDTLS_COMMON_H */
diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index cc57b77..d143d73 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -3,8 +3,8 @@
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
-#ifndef __MBEDTLS_CONFIG_H__
-#define __MBEDTLS_CONFIG_H__
+#ifndef MBEDTLS_CONFIG_H
+#define MBEDTLS_CONFIG_H
 
 /*
  * Key algorithms currently supported on mbed TLS libraries
@@ -104,4 +104,4 @@
 #define TF_MBEDTLS_HEAP_SIZE		U(7168)
 #endif
 
-#endif /* __MBEDTLS_CONFIG_H__ */
+#endif /* MBEDTLS_CONFIG_H */