diff --git a/zsh_functions b/zsh_functions
index 5102e6d..33dacdf 100644
--- a/zsh_functions
+++ b/zsh_functions
@@ -83,3 +83,12 @@ pacman_disowned(){
 virtual_env_prompt() {
     REPLY=${VIRTUAL_ENV+(${VIRTUAL_ENV:t}) }
 }
+
+update-mirrors() {
+    if [[ $(uname -m) != "x86_64" ]]
+    then
+        echo "Not supported on this architecture."
+    else
+        sh -c "reflector -p http -l 50 --sort rate | tee /etc/pacman.d/mirrorlist"
+    fi
+}
diff --git a/zshrc b/zshrc
index 5371b8f..b39c61c 100644
--- a/zshrc
+++ b/zshrc
@@ -20,7 +20,6 @@ alias sudo='sudo '
 alias tasks="ps -u fab"
 alias update-grub="grub-mkconfig -o /boot/grub/grub.cfg"
 alias sml2p='/home/fab/.Sync-my-L2P/Sync-my-L2P.run'
-alias update-mirrors='sh -c "reflector -p http -l 50 --sort rate | tee /etc/pacman.d/mirrorlist"'
 alias ssh='ssh '
 alias ping='ping '
 alias aur-update='pacaur -Syu --devel --noconfirm'