diff --git a/libcxxabi/CMakeLists.txt b/libcxxabi/CMakeLists.txt
index e6856c751f21..96cbe46925e7 100644
--- a/libcxxabi/CMakeLists.txt
+++ b/libcxxabi/CMakeLists.txt
@@ -93,7 +93,7 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
     set(LLVM_INCLUDE_TESTS OFF)
   endif()
 
-  set(LIBCXXABI_LIBDIR_SUFFIX "" CACHE STRING
+  set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
       "Define suffix of library directory name (32/64)")
 
   set(LIBCXXABI_BUILT_STANDALONE 1)