diff --git a/en/device-dev/porting/porting-chip-kernel-overview.md b/en/device-dev/porting/porting-chip-kernel-overview.md
index 190c6ec282ca46e818557e68ff90a59d9a6a8edb..ff9cfea93f679513103383c44df26920f827706b 100644
--- a/en/device-dev/porting/porting-chip-kernel-overview.md
+++ b/en/device-dev/porting/porting-chip-kernel-overview.md
@@ -33,7 +33,7 @@ The directory structure of the kernel is described as follows:
 │   │        ├── keil       --- Implementation of the Keil toolchain
 │   │        └── xxx        --- Implementation of the particular toolchain
 │   ├── include             --- Header files that declare the APIs required, kernel-independent
-│   └── risc-v              --- RISK_V architecture
+│   └── risc-v              --- RISC_V architecture
 │        └── gcc            --- Implementation of the GCC toolchain
 ├── components              --- Components available for porting and header files exposed externally
 ├── kal                     --- APIs exposed externally, including CMSIS APIs and part of POSIX APIs