diff --git a/architectures/i586.cfg b/architectures/i586.cfg
index 5f20790..9834443 100644
--- a/architectures/i586.cfg
+++ b/architectures/i586.cfg
@@ -1,5 +1,5 @@
 cfg_target_canonical="i586-$cfg_glued_vendor-linux-gnu"
 cfg_target_linux='x86'
-cfg_target_gcc_configure_flags='--with-arch=i586 --with-cpu=i586 --with-tune=i586'
+cfg_target_gcc_configure_flags='--with-arch=i586 --with-mcpu=i586 --with-mtune=i586'
 cfg_target_gcc_flags='-O2 -pipe -march=i586 -funit-at-a-time'
 cfg_target_glibc_configure_flags='--with-cpu=i586'