diff --git a/src/Kconfig b/src/Kconfig
index c123f53b92..e807b09be4 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -15,7 +15,7 @@ config RT_USING_ARCH_DATA_TYPE
         For the data type like, `rt_uint8/int8_t, rt_uint16/int16_t, rt_uint32/int32_t`,
         BSP can define these basic data types in ARCH_CPU level.
 
-        Please re-define these data types in bsp_project.h file.
+        Please re-define these data types in rtconfig_project.h file.
 
 config RT_USING_SMP
     bool "Enable SMP(Symmetric multiprocessing)"