diff --git a/cmake/cortex_m0.cmake b/cmake/cortex_m0.cmake
index c1ecc144..82a50ecf 100644
--- a/cmake/cortex_m0.cmake
+++ b/cmake/cortex_m0.cmake
@@ -1,6 +1,6 @@
 # Name of the target
 set(CMAKE_SYSTEM_NAME Generic)
-set(CMAKE_SYSTEM_PROCESSOR cortex-m4)
+set(CMAKE_SYSTEM_PROCESSOR cortex-m0)
 
 set(THREADX_ARCH "cortex_m0")
 set(THREADX_TOOLCHAIN "gnu")
diff --git a/cmake/cortex_m3.cmake b/cmake/cortex_m3.cmake
index 622c456b..9cc1e06e 100644
--- a/cmake/cortex_m3.cmake
+++ b/cmake/cortex_m3.cmake
@@ -1,6 +1,6 @@
 # Name of the target
 set(CMAKE_SYSTEM_NAME Generic)
-set(CMAKE_SYSTEM_PROCESSOR cortex-m4)
+set(CMAKE_SYSTEM_PROCESSOR cortex-m3)
 
 set(THREADX_ARCH "cortex_m3")
 set(THREADX_TOOLCHAIN "gnu")