diff --git a/arch/platform/native/contiki-conf.h b/arch/platform/native/contiki-conf.h
index b8a43a604..ea1383660 100644
--- a/arch/platform/native/contiki-conf.h
+++ b/arch/platform/native/contiki-conf.h
@@ -58,12 +58,6 @@ int select_set_callback(int fd, const struct select_callback *callback);
 #define EEPROM_CONF_SIZE				1024
 #endif
 
-/* These names are deprecated, use C99 names. */
-typedef uint8_t   u8_t;
-typedef uint16_t u16_t;
-typedef uint32_t u32_t;
-typedef  int32_t s32_t;
-
 typedef unsigned int uip_stats_t;
 
 #define LEDS_CONF_LEGACY_API 1