diff --git a/scripts/flash_klipper.sh b/scripts/flash_klipper.sh
index bcb88d7..be92d6a 100644
--- a/scripts/flash_klipper.sh
+++ b/scripts/flash_klipper.sh
@@ -269,7 +269,7 @@ function build_fw(){
   else
     cd "${KLIPPER_DIR}"
     status_msg "Initializing firmware build ..."
-    dep=(build-essential dpkg-dev make)
+    local dep=(build-essential dpkg-dev make)
     dependency_check "${dep[@]}"
 
     make clean && make menuconfig
diff --git a/scripts/moonraker.sh b/scripts/moonraker.sh
index 75fb5ea..5272ff3 100644
--- a/scripts/moonraker.sh
+++ b/scripts/moonraker.sh
@@ -114,7 +114,7 @@ function create_moonraker_virtualenv(){
 function moonraker_setup(){
   local confirm_msg instances=${1}
   ### checking dependencies
-  dep=(git wget curl unzip dfu-util virtualenv)
+  local dep=(git wget curl unzip dfu-util virtualenv)
   ### additional required dependencies on armbian
   dep+=(libjpeg-dev zlib1g-dev)
   dependency_check "${dep[@]}"
diff --git a/scripts/nginx.sh b/scripts/nginx.sh
index 5998680..b06f7aa 100644
--- a/scripts/nginx.sh
+++ b/scripts/nginx.sh
@@ -248,7 +248,7 @@ function set_nginx_cfg(){
   if [ "${SET_NGINX_CFG}" = "true" ]; then
     local cfg="${SRCDIR}/kiauh/resources/${1}"
     #check for dependencies
-    dep=(nginx)
+    local dep=(nginx)
     dependency_check "${dep[@]}"
     #execute operations
     status_msg "Creating Nginx configuration for ${1} ..."
diff --git a/scripts/octoprint.sh b/scripts/octoprint.sh
index 042b8fd..dd84ed8 100644
--- a/scripts/octoprint.sh
+++ b/scripts/octoprint.sh
@@ -68,7 +68,7 @@ function octoprint_setup_dialog(){
 function octoprint_setup(){
   local instances="${1}"
   ### check and install all dependencies
-  dep=(
+  local dep=(
     git
     wget
     python3-pip
diff --git a/scripts/pretty_gcode.sh b/scripts/pretty_gcode.sh
index 341fb55..a2fffbe 100644
--- a/scripts/pretty_gcode.sh
+++ b/scripts/pretty_gcode.sh
@@ -26,8 +26,8 @@ function install_pgc_for_klipper(){
   echo -e "${cyan}\n###### On which port should PrettyGCode run? (Default: ${pgc_default_port})${white} "
   read -e -p "${cyan}###### Port:${white} " -i "${pgc_default_port}" pgc_custom_port
   ### check nginx dependency
-  dep=(nginx)
-  dependency_check
+  local dep=(nginx)
+  dependency_check "${dep[@]}"
   ### clone repo
   [ -d "${PGC_DIR}" ] && rm -rf "${PGC_DIR}"
   cd "${HOME}" && git clone "${PGC_FOR_KLIPPER_REPO}"
diff --git a/scripts/utilities.sh b/scripts/utilities.sh
index 0a1bb5b..f0a324f 100644
--- a/scripts/utilities.sh
+++ b/scripts/utilities.sh
@@ -577,7 +577,7 @@ function change_hostname(){
 function set_hostname(){
   local new_hostname=${1} current_date
   #check for dependencies
-  dep=(avahi-daemon)
+  local dep=(avahi-daemon)
   dependency_check "${dep[@]}"
 
   #create host file if missing or create backup of existing one with current date&time