diff --git a/config/arch.x86_64 b/config/arch.x86_64
index a7d1b39587..8f51a91f1f 100644
--- a/config/arch.x86_64
+++ b/config/arch.x86_64
@@ -10,8 +10,8 @@
   TARGET_KERNEL_ARCH=x86
 
 # setup ARCH specific *FLAGS
-  TARGET_CFLAGS="-march=$TARGET_CPU -m64 -mmmx -msse -msse2 -mfpmath=sse"
-  TARGET_LDFLAGS="-march=$TARGET_CPU -m64"
+  TARGET_CFLAGS="-march=$TARGET_CPU"
+  TARGET_LDFLAGS="-march=$TARGET_CPU"
 
 # build with SIMD support ( yes / no )
   TARGET_FEATURES+=" mmx sse sse2"