diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ac21ab5d5..1de118a383 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -175,9 +175,9 @@ if(CMAKE_C_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang
 endif()
 
 set(CMAKE_C_FLAGS
-  "${CMAKE_C_FLAGS} ${C_FLAGS_PROCESSOR} ${commonOpts} -std=gnu11 -funroll-loops")
+  "${C_FLAGS_PROCESSOR} ${commonOpts} -std=gnu11 -funroll-loops ${CMAKE_C_FLAGS}")
 set(CMAKE_CXX_FLAGS
-  "${CMAKE_CXX_FLAGS} ${C_FLAGS_PROCESSOR}  ${commonOpts} -std=c++11")
+  "${C_FLAGS_PROCESSOR}  ${commonOpts} -std=c++11 ${CMAKE_CXX_FLAGS}")
 
 
 add_boolean_option(SANITIZE_ADDRESS False "enable the address sanitizer (ASan)" ON)