diff --git a/ports_smp/cortex_a9_smp/gnu/example_build/build_threadx_sample.bat b/ports_smp/cortex_a9_smp/gnu/example_build/build_threadx_sample.bat
index 22d0a618b..0e2611181 100644
--- a/ports_smp/cortex_a9_smp/gnu/example_build/build_threadx_sample.bat
+++ b/ports_smp/cortex_a9_smp/gnu/example_build/build_threadx_sample.bat
@@ -1,4 +1,4 @@
-arm-none-eabi-gcc -c -g -I../../../../common_smp/inc -I../inc -mcpu=cortex-a5 sample_threadx.c
+arm-none-eabi-gcc -c -g -I../../../../common_smp/inc -I../inc -mcpu=cortex-a9 sample_threadx.c
 arm-none-eabi-gcc -c -g -mcpu=cortex-a9 startup.S
 arm-none-eabi-gcc -c -g -mcpu=cortex-a9 MP_GIC.S
 arm-none-eabi-gcc -c -g -mcpu=cortex-a9 MP_SCU.S