diff --git a/src/dynamic-ip b/src/dynamic-ip
index 978e17b..7021fcd 100755
--- a/src/dynamic-ip
+++ b/src/dynamic-ip
@@ -373,12 +373,14 @@ check-update() {
 }
 
 prog_lock() {
+    local lock_name=$1
+
     ## Locking
 
-    if [[ "$USER" = "root" ]]; then
-        LOCKFILE="/var/lock/$(basename "$0")"
+    if [[ "$USER" == "root" ]]; then
+        LOCKFILE="/var/lock/${lock_name}"
     else
-        LOCKFILE="/tmp/${USER}/lock/$(basename "$0")"
+        LOCKFILE="/tmp/${USER}/lock/${lock_name}"
         mkdir -p "/tmp/${USER}/lock"
     fi
     LOCKFD=99
@@ -412,14 +414,13 @@ prog_lock() {
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
     # Internal Initialization
 
-    #prog_name=$(basename "$0")
+    prog_name=$(basename "$0")
     script_dir=$(dirname "$(readlink -f "$0")")
 
-    prog_lock
-
 
     # Main
     if [[ -r "${script_dir}/plugins/${1}" ]]; then
+        prog_lock "${prog_name}-${1}"
         # shellcheck source=plugins/update-ipv4
         source "${script_dir}/plugins/${1}"
     else