diff --git a/meta/classes-recipe/cmake.bbclass b/meta/classes-recipe/cmake.bbclass
index 2c6d28b7a9..1488d744d4 100644
--- a/meta/classes-recipe/cmake.bbclass
+++ b/meta/classes-recipe/cmake.bbclass
@@ -180,8 +180,6 @@ list(APPEND CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES ${includedir})
 
 EOF
         cat > ${WORKDIR}/toolchain-native.cmake <<EOF
-set( CMAKE_SYSTEM_NAME ${@map_host_os_to_system_name(d.getVar('BUILD_OS'))} )
-set( CMAKE_SYSTEM_PROCESSOR ${@map_host_arch_to_uname_arch(d.getVar('BUILD_ARCH'))} )
 set( CMAKE_C_COMPILER ${OECMAKE_NATIVE_C_COMPILER} )
 set( CMAKE_CXX_COMPILER ${OECMAKE_NATIVE_CXX_COMPILER} )
 set( CMAKE_ASM_COMPILER ${OECMAKE_NATIVE_C_COMPILER} )