diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index b0296630113..9181fe0847c 100644
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -27,7 +27,7 @@ endif( IS_BIG_ENDIAN )
 set(SHLIBEXT ${LTDL_SHLIB_EXT})
 #EXEEXT already set.
 set(OS "${CMAKE_SYSTEM}")
-set(ARCH "X86") # TODO: This gives "i686" in Linux: "${CMAKE_SYSTEM_PROCESSOR}")
+set(ARCH "${LLVM_NATIVE_ARCH}")
 
 get_system_libs(LLVM_SYSTEM_LIBS_LIST)
 foreach(l ${LLVM_SYSTEM_LIBS_LIST})