diff --git a/zzz_evobackup b/zzz_evobackup
index be36204..e722d44 100755
--- a/zzz_evobackup
+++ b/zzz_evobackup
@@ -123,9 +123,7 @@ pick_server() {
 if [ -e "${PIDFILE}" ]; then
     pid=$(cat "${PIDFILE}")
     # Does process still exist ?
-    # ignore check because multiple processes might exist
-    # shellcheck disable=SC2086
-    if kill -0 ${pid} 2> /dev/null; then
+    if kill -0 "${pid}" 2> /dev/null; then
         # Killing the childs of evobackup.
         for ppid in $(pgrep -P "${pid}"); do
             kill -9 "${ppid}";