diff --git a/larbs.sh b/larbs.sh
index dc27cfe..3cf059e 100644
--- a/larbs.sh
+++ b/larbs.sh
@@ -177,6 +177,9 @@ newperms "%wheel ALL=(ALL) NOPASSWD: ALL"
 # Make pacman and yay colorful because why not.
 sed -i "s/^#Color/Color/g" /etc/pacman.conf
 
+# Use all cores for compilation.
+sed -i "s/-j2/-j$(nproc)/;s/^#MAKEFLAGS/MAKEFLAGS/" /etc/makepkg.conf
+
 manualinstall $aurhelper || error "Failed to install AUR helper."
 
 # The command that does all the installing. Reads the progs.csv file and