diff --git a/generate-DH-parameters.sh b/generate-DH-parameters.sh
index 73c09c5..fec6dcc 100755
--- a/generate-DH-parameters.sh
+++ b/generate-DH-parameters.sh
@@ -3,6 +3,7 @@
 script_name="$(basename $(realpath $0))"
 working_dir="$(dirname $(realpath $0))"
 
+LOCK_DIR="$(mktemp -d)"
 log_file="${LOCK_DIR}/${script_name%%.*}.log"
 
 backup_date="$(date +%Y-%m-%d-%H%M)"
@@ -157,10 +158,6 @@ get_openssl_version() {
 # -
 trap clean_up SIGHUP SIGINT SIGTERM
 
-# - Create lock directory '$LOCK_DIR"
-#
-mkdir "$LOCK_DIR"
-
 # Detect OpenSSL version
 #
 get_openssl_version