diff --git a/bsp/ls1bdev/rtconfig.py b/bsp/ls1bdev/rtconfig.py
index 13605429c1c5e1bf5cd6292279847cd55a71aa03..a2c78a926ab8723fe9825e36c7c95f8f9f203487 100644
--- a/bsp/ls1bdev/rtconfig.py
+++ b/bsp/ls1bdev/rtconfig.py
@@ -36,7 +36,7 @@ OBJDUMP = PREFIX + 'objdump'
 OBJCPY = PREFIX + 'objcopy'
 READELF = PREFIX + 'readelf'
 
-DEVICE = ' -mips32'
+DEVICE = ' -mips32r2'
 CFLAGS = DEVICE + ' -EL -G0 -mno-abicalls -fno-pic -fno-builtin -fno-exceptions -ffunction-sections -fomit-frame-pointer'
 AFLAGS = ' -c' + DEVICE + ' -EL -fno-pic -fno-builtin -mno-abicalls -x assembler-with-cpp'
 LFLAGS = DEVICE + ' -nostartfiles -EL -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,Reset_Handler -T ls1b_ram.lds'