diff --git a/config/arch.x86_64 b/config/arch.x86_64
index 4875f386d0..e0d6b2ae0f 100644
--- a/config/arch.x86_64
+++ b/config/arch.x86_64
@@ -8,5 +8,4 @@
 
 # setup ARCH specific *FLAGS
   TARGET_CFLAGS="-fPIC -march=$TARGET_CPU -m64"
-  TARGET_CXXFLAGS="$TARGET_CFLAGS"
   TARGET_LDFLAGS="-fPIC -march=$TARGET_CPU -m64"