diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86fd3b58..011bfec5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -197,7 +197,7 @@ if (CMAKE_COMPILER_IS_GNUCC AND NOT CROSS_COMPILE)
     message(STATUS "ARCH_FLAG '${ARCH_FLAG}' '${GNUCC_ARCH}', TUNE_FLAG '${TUNE_FLAG}' '${GNUCC_TUNE}' ")
 
     # test the parsed flag
-    set (EXEC_ARGS ${CC_ARG1} -E - -${ARCH_FLAG}=${GNUCC_ARCH} -${TUNE_FLAG}=${GNUCC_TUNE} -${CPU_FLAG}=${GNUCC_CPU})
+    set (EXEC_ARGS ${CC_ARG1} -E - -${ARCH_FLAG}=${GNUCC_ARCH} -${TUNE_FLAG}=${GNUCC_TUNE})
     execute_process(COMMAND ${CMAKE_C_COMPILER} ${EXEC_ARGS}
         OUTPUT_QUIET ERROR_QUIET
         INPUT_FILE /dev/null