diff --git a/lfs/syslinux b/lfs/syslinux
index 43bcde9b6..00a8415d0 100644
--- a/lfs/syslinux
+++ b/lfs/syslinux
@@ -31,7 +31,7 @@ DL_FILE    = $(THISAPP).tar.xz
 DL_FROM    = $(URL_IPFIRE)
 DIR_APP    = $(DIR_SRC)/$(THISAPP)
 TARGET     = $(DIR_INFO)/$(THISAPP)
-SUP_ARCH   = i586
+SUP_ARCH   = x86_64 i586
 
 ###############################################################################
 # Top-level Rules