diff --git a/include/openthread/cli.h b/include/openthread/cli.h
index 7edece9be..798db2191 100644
--- a/include/openthread/cli.h
+++ b/include/openthread/cli.h
@@ -32,8 +32,8 @@
  *  This file defines the top-level functions for the OpenThread CLI server.
  */
 
-#ifndef CLI_H_
-#define CLI_H_
+#ifndef OPENTHREAD_CLI_H_
+#define OPENTHREAD_CLI_H_
 
 #include <stdarg.h>
 #include <stdint.h>
@@ -152,4 +152,4 @@ void otCliPlatLogv(otLogLevel aLogLevel, otLogRegion aLogRegion, const char *aFo
 } // extern "C"
 #endif
 
-#endif
+#endif // OPENTHREAD_CLI_H_
diff --git a/include/openthread/link_raw.h b/include/openthread/link_raw.h
index 5226d3f7b..cb30ba478 100644
--- a/include/openthread/link_raw.h
+++ b/include/openthread/link_raw.h
@@ -32,8 +32,8 @@
  *   This file defines the raw OpenThread IEEE 802.15.4 Link Layer API.
  */
 
-#ifndef LINK_RAW_H_
-#define LINK_RAW_H_
+#ifndef OPENTHREAD_LINK_RAW_H_
+#define OPENTHREAD_LINK_RAW_H_
 
 #include <openthread/types.h>
 #include <openthread/platform/radio.h>
@@ -329,4 +329,4 @@ otError otLinkRawSrcMatchClearExtEntries(otInstance *aInstance);
 } // extern "C"
 #endif
 
-#endif // LINK_RAW_H_
+#endif // OPENTHREAD_LINK_RAW_H_
diff --git a/include/openthread/ncp.h b/include/openthread/ncp.h
index 329013d1b..76f3c589a 100644
--- a/include/openthread/ncp.h
+++ b/include/openthread/ncp.h
@@ -32,8 +32,8 @@
  *  This file defines the top-level functions for the OpenThread NCP module.
  */
 
-#ifndef NCP_H_
-#define NCP_H_
+#ifndef OPENTHREAD_NCP_H_
+#define OPENTHREAD_NCP_H_
 
 #include <stdarg.h>
 #include <openthread/types.h>
@@ -221,4 +221,4 @@ void otNcpRegisterLegacyHandlers(const otNcpLegacyHandlers *aHandlers);
 } // extern "C"
 #endif
 
-#endif
+#endif // OPENTHREAD_NCP_H_
diff --git a/include/openthread/platform/alarm-micro.h b/include/openthread/platform/alarm-micro.h
index 113b5f729..895b65019 100644
--- a/include/openthread/platform/alarm-micro.h
+++ b/include/openthread/platform/alarm-micro.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for the microsecond alarm service.
  */
 
-#ifndef ALARM_MICRO_H_
-#define ALARM_MICRO_H_
+#ifndef OPENTHREAD_PLATFORM_ALARM_MICRO_H_
+#define OPENTHREAD_PLATFORM_ALARM_MICRO_H_
 
 #include <stdint.h>
 
@@ -92,4 +92,4 @@ extern void otPlatAlarmMicroFired(otInstance *aInstance);
 } // extern "C"
 #endif
 
-#endif // ALARM_MICRO_H_
+#endif // OPENTHREAD_PLATFORM_ALARM_MICRO_H_
diff --git a/include/openthread/platform/alarm-milli.h b/include/openthread/platform/alarm-milli.h
index ed078ba8e..15b8a0260 100644
--- a/include/openthread/platform/alarm-milli.h
+++ b/include/openthread/platform/alarm-milli.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for the millisecond alarm service.
  */
 
-#ifndef ALARM_MILLI_H_
-#define ALARM_MILLI_H_
+#ifndef OPENTHREAD_PLATFORM_ALARM_MILLI_H_
+#define OPENTHREAD_PLATFORM_ALARM_MILLI_H_
 
 #include <stdint.h>
 
@@ -99,4 +99,4 @@ extern void otPlatDiagAlarmFired(otInstance *aInstance);
 } // extern "C"
 #endif
 
-#endif // ALARM_MILLI_H_
+#endif // OPENTHREAD_PLATFORM_ALARM_MILLI_H_
diff --git a/include/openthread/platform/debug_uart.h b/include/openthread/platform/debug_uart.h
index 52c13a1b0..d9d1ca706 100644
--- a/include/openthread/platform/debug_uart.h
+++ b/include/openthread/platform/debug_uart.h
@@ -26,8 +26,8 @@
  *  POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef OPENTHREAD_PLATFORM_DEBUG_UART_H
-#define OPENTHREAD_PLATFORM_DEBUG_UART_H
+#ifndef OPENTHREAD_PLATFORM_DEBUG_UART_H_
+#define OPENTHREAD_PLATFORM_DEBUG_UART_H_
 
 #include <openthread/platform/logging.h>
 
@@ -191,4 +191,4 @@ otError otPlatDebugUart_logfile(const char *filename);
 } // extern "C"
 #endif
 
-#endif // OPENTHREAD_PLATFORM_DEBUG_UART_H
+#endif // OPENTHREAD_PLATFORM_DEBUG_UART_H_
diff --git a/include/openthread/platform/diag.h b/include/openthread/platform/diag.h
index 15cd0156a..13e5e9ae8 100644
--- a/include/openthread/platform/diag.h
+++ b/include/openthread/platform/diag.h
@@ -33,8 +33,8 @@
  *
  */
 
-#ifndef DIAG_H_
-#define DIAG_H_
+#ifndef OPENTHREAD_PLATFORM_DIAG_H_
+#define OPENTHREAD_PLATFORM_DIAG_H_
 
 #include <stddef.h>
 #include <stdint.h>
@@ -127,4 +127,4 @@ void otPlatDiagAlarmCallback(otInstance *aInstance);
 } // end of extern "C"
 #endif
 
-#endif
+#endif // OPENTHREAD_PLATFORM_DIAG_H_
diff --git a/include/openthread/platform/logging-windows.h b/include/openthread/platform/logging-windows.h
index 71f23392d..39e369aed 100644
--- a/include/openthread/platform/logging-windows.h
+++ b/include/openthread/platform/logging-windows.h
@@ -32,8 +32,8 @@
  *  This file defines the WPP Tracing Definitions.
  */
 
-#ifndef _LOGGING_WINDOWS_H
-#define _LOGGING_WINDOWS_H
+#ifndef OPENTHREAD_PLATFORM_LOGGING_WINDOWS_H_
+#define OPENTHREAD_PLATFORM_LOGGING_WINDOWS_H_
 
 #define OPENTHREAD_ENABLE_CERT_LOG 1
 
@@ -583,4 +583,4 @@
 // USESUFFIX(otLogFuncExitErr, " %!otError!", EXP);
 // end_wpp
 
-#endif // _LOGGING_WINDOWS_H
+#endif // OPENTHREAD_PLATFORM_LOGGING_WINDOWS_H_
diff --git a/include/openthread/platform/logging.h b/include/openthread/platform/logging.h
index c1ac81913..8f642b426 100644
--- a/include/openthread/platform/logging.h
+++ b/include/openthread/platform/logging.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for the debug log service.
  */
 
-#ifndef LOGGING_H_
-#define LOGGING_H_
+#ifndef OPENTHREAD_PLATFORM_LOGGING_H_
+#define OPENTHREAD_PLATFORM_LOGGING_H_
 
 #include <stdarg.h>
 #include <stdint.h>
@@ -100,4 +100,4 @@ void otPlatLogv(otLogLevel aLogLevel, otLogRegion aLogRegion, const char *aForma
 } // extern "C"
 #endif
 
-#endif // DEBUG_H_
+#endif // OPENTHREAD_PLATFORM_LOGGING_H_
diff --git a/include/openthread/platform/memory.h b/include/openthread/platform/memory.h
index 4b6ac6c1f..b1de90af2 100644
--- a/include/openthread/platform/memory.h
+++ b/include/openthread/platform/memory.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for dynamic memory allocation.
  */
 
-#ifndef MEMORY_H_
-#define MEMORY_H_
+#ifndef OPENTHREAD_PLATFORM_MEMORY_H_
+#define OPENTHREAD_PLATFORM_MEMORY_H_
 
 #ifdef __cplusplus
 extern "C" {
@@ -89,4 +89,4 @@ void otPlatFree(void *aPtr);
 } // extern "C"
 #endif
 
-#endif // DEBUG_H_
+#endif // OPENTHREAD_PLATFORM_MEMORY_H_
diff --git a/include/openthread/platform/messagepool.h b/include/openthread/platform/messagepool.h
index c2924b5e9..e7b4d62d9 100644
--- a/include/openthread/platform/messagepool.h
+++ b/include/openthread/platform/messagepool.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for the message pool.
  */
 
-#ifndef MESSAGEPOOL_H_
-#define MESSAGEPOOL_H_
+#ifndef OPENTHREAD_PLATFORM_MESSAGEPOOL_H_
+#define OPENTHREAD_PLATFORM_MESSAGEPOOL_H_
 
 #include <stdint.h>
 
@@ -102,4 +102,4 @@ uint16_t otPlatMessagePoolNumFreeBuffers(otInstance *aInstance);
  *
  */
 
-#endif // MESSAGEPOOL_H_
+#endif // OPENTHREAD_PLATFORM_MESSAGEPOOL_H_
diff --git a/include/openthread/platform/misc.h b/include/openthread/platform/misc.h
index 7a3bb1472..364e5de97 100644
--- a/include/openthread/platform/misc.h
+++ b/include/openthread/platform/misc.h
@@ -32,8 +32,8 @@
  *   This file includes platform abstractions for miscellaneous behaviors.
  */
 
-#ifndef OT_PLATFORM_MISC_H
-#define OT_PLATFORM_MISC_H 1
+#ifndef OPENTHREAD_PLATFORM_MISC_H_
+#define OPENTHREAD_PLATFORM_MISC_H_
 
 #include <stdint.h>
 
@@ -200,4 +200,4 @@ otPlatMcuPowerState otPlatGetMcuPowerState(otInstance *aInstance);
 } // extern "C"
 #endif
 
-#endif // OT_PLATFORM_MISC_H
+#endif // OPENTHREAD_PLATFORM_MISC_H_
diff --git a/include/openthread/platform/radio.h b/include/openthread/platform/radio.h
index 798d92010..92f2f0e94 100644
--- a/include/openthread/platform/radio.h
+++ b/include/openthread/platform/radio.h
@@ -33,8 +33,8 @@
  *
  */
 
-#ifndef RADIO_H_
-#define RADIO_H_
+#ifndef OPENTHREAD_PLATFORM_RADIO_H_
+#define OPENTHREAD_PLATFORM_RADIO_H_
 
 #include <stdint.h>
 
@@ -558,4 +558,4 @@ int8_t otPlatRadioGetReceiveSensitivity(otInstance *aInstance);
 } // end of extern "C"
 #endif
 
-#endif // RADIO_H_
+#endif // OPENTHREAD_PLATFORM_RADIO_H_
diff --git a/include/openthread/platform/random.h b/include/openthread/platform/random.h
index 666681ba9..2cc77a3bf 100644
--- a/include/openthread/platform/random.h
+++ b/include/openthread/platform/random.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for random number generation.
  */
 
-#ifndef RANDOM_H_
-#define RANDOM_H_
+#ifndef OPENTHREAD_PLATFORM_RANDOM_H_
+#define OPENTHREAD_PLATFORM_RANDOM_H_
 
 #include <stdint.h>
 
@@ -87,4 +87,4 @@ otError otPlatRandomGetTrue(uint8_t *aOutput, uint16_t aOutputLength);
 } // end of extern "C"
 #endif
 
-#endif // RANDOM_H_
+#endif // OPENTHREAD_PLATFORM_RANDOM_H_
diff --git a/include/openthread/platform/settings.h b/include/openthread/platform/settings.h
index fdf48d800..aa3b35b56 100644
--- a/include/openthread/platform/settings.h
+++ b/include/openthread/platform/settings.h
@@ -32,8 +32,8 @@
  *   This file includes platform abstraction for non-volatile storage of settings.
  */
 
-#ifndef OT_PLATFORM_SETTINGS_H
-#define OT_PLATFORM_SETTINGS_H 1
+#ifndef OPENTHREAD_PLATFORM_SETTINGS_H_
+#define OPENTHREAD_PLATFORM_SETTINGS_H_
 
 #include <openthread/types.h>
 
@@ -278,4 +278,4 @@ void otPlatSettingsWipe(otInstance *aInstance);
 } // extern "C"
 #endif
 
-#endif // OT_PLATFORM_SETTINGS_H
+#endif // OPENTHREAD_PLATFORM_SETTINGS_H_
diff --git a/include/openthread/platform/spi-slave.h b/include/openthread/platform/spi-slave.h
index 58aa5b2fa..5920e0fc9 100644
--- a/include/openthread/platform/spi-slave.h
+++ b/include/openthread/platform/spi-slave.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for SPI slave communication.
  */
 
-#ifndef SPI_SLAVE_H_
-#define SPI_SLAVE_H_
+#ifndef OPENTHREAD_PLATFORM_SPI_SLAVE_H_
+#define OPENTHREAD_PLATFORM_SPI_SLAVE_H_
 
 #include <stdint.h>
 
@@ -177,4 +177,4 @@ otError otPlatSpiSlavePrepareTransaction(uint8_t *aOutputBuf,
 } // extern "C"
 #endif
 
-#endif // SPI_SLAVE_H_
+#endif // OPENTHREAD_PLATFORM_SPI_SLAVE_H_
diff --git a/include/openthread/platform/toolchain.h b/include/openthread/platform/toolchain.h
index 38bca7147..5dfec8221 100644
--- a/include/openthread/platform/toolchain.h
+++ b/include/openthread/platform/toolchain.h
@@ -54,8 +54,8 @@
  *
  */
 
-#ifndef TOOLCHAIN_H_
-#define TOOLCHAIN_H_
+#ifndef OPENTHREAD_PLATFORM_TOOLCHAIN_H_
+#define OPENTHREAD_PLATFORM_TOOLCHAIN_H_
 
 #ifdef __cplusplus
 extern "C" {
@@ -279,4 +279,4 @@ extern "C" {
 } // extern "C"
 #endif
 
-#endif // TOOLCHAIN_H_
+#endif // OPENTHREAD_PLATFORM_TOOLCHAIN_H_
diff --git a/include/openthread/platform/uart.h b/include/openthread/platform/uart.h
index faf178e6f..f711e36c7 100644
--- a/include/openthread/platform/uart.h
+++ b/include/openthread/platform/uart.h
@@ -32,8 +32,8 @@
  *   This file includes the platform abstraction for UART communication.
  */
 
-#ifndef UART_H_
-#define UART_H_
+#ifndef OPENTHREAD_PLATFORM_UART_H_
+#define OPENTHREAD_PLATFORM_UART_H_
 
 #include <stdint.h>
 
@@ -107,4 +107,4 @@ extern void otPlatUartReceived(const uint8_t *aBuf, uint16_t aBufLength);
 } // extern "C"
 #endif
 
-#endif // UART_H_
+#endif // OPENTHREAD_PLATFORM_UART_H_