diff --git a/setup_system.sh b/setup_system.sh
index 3f535f5..55c554c 100755
--- a/setup_system.sh
+++ b/setup_system.sh
@@ -56,7 +56,7 @@ function is_laptop() {
 # Returns a comma-separated list of packages for one or more targets.
 # The packages file may contain multiple rows with the same target name.
 function get_packages() {
-    local packages pkg_file="$SCRIPT_DIR/.installer/packages"
+    local pkg_file="$SCRIPT_DIR/.installer/packages"
 
     for target in "$@"; do
         while read -r row; do
@@ -149,7 +149,7 @@ function setup_homebrew() {
 }
 
 function setup_brew_formulas() {
-    local targets=("brew-formulas-any") packages
+    local targets=("brew-formulas-any")
 
     brew update || return 1
 
@@ -182,7 +182,7 @@ function setup_krew() {
 }
 
 function setup_krew_plugins() {
-    local targets=("krew-any") packages
+    local targets=("krew-any")
 
     if ! command -v kubectl-krew >/dev/null; then
         echo "WARN: Krew not installed: kubectl-krew"