diff --git a/pacman/.config/pacman/makepkg.conf b/pacman/.config/pacman/makepkg.conf
index 441dca9..7f7c55a 100644
--- a/pacman/.config/pacman/makepkg.conf
+++ b/pacman/.config/pacman/makepkg.conf
@@ -1,6 +1,7 @@
 # march=native and flto added
 CFLAGS="-march=native -mtune=native -O2 -pipe -fstack-protector-strong"
 CXXFLAGS="-march=native -mtune=native -O2 -pipe -fstack-protector-strong"
+RUSTFLAGS="-C target_cpu=native"
 
 # Do a parallel build.
 MAKEFLAGS="-j6"