diff --git a/conf/distro/include/tcmode-external-sourcery.inc b/conf/distro/include/tcmode-external-sourcery.inc
index 3ce45c9..5989612 100644
--- a/conf/distro/include/tcmode-external-sourcery.inc
+++ b/conf/distro/include/tcmode-external-sourcery.inc
@@ -27,7 +27,7 @@ CSL_TARGET_SYS_arm ?= "arm-none-linux-gnueabi arm-mentor-linux-gnueabi"
 CSL_TARGET_SYS_mips ?= "mips-linux-gnu mips-mentor-linux-gnu"
 CSL_TARGET_SYS_mipsel ?= "mips-linux-gnu mips-mentor-linux-gnu"
 CSL_TARGET_SYS_mips64 ?= "mips64-nlm-linux-gnu mips-linux-gnu mips-mentor-linux-gnu"
-CSL_TARGET_SYS_x86-64 ?= "i686-pc-linux-gnu i686-mentor-linux-gnu"
+CSL_TARGET_SYS_x86-64 ?= "i686-pc-linux-gnu i686-mentor-linux-gnu x86_64-linux-gnu"
 CSL_TARGET_SYS_i686 ?= "i686-pc-linux-gnu i686-mentor-linux-gnu"
 CSL_TARGET_SYS_i586 ?= "i686-pc-linux-gnu i686-mentor-linux-gnu"
 CSL_TARGET_SYS = "${TARGET_SYS}"