diff --git a/rclone/rclone-upload.sh b/rclone/rclone-upload.sh
index 4023961..3360d4f 100644
--- a/rclone/rclone-upload.sh
+++ b/rclone/rclone-upload.sh
@@ -4,8 +4,33 @@
 # * * * * * /home/plex/scripts/rclone-upload.cron >/dev/null 2>&1
 # modify line 20 config file location
 
-if pidof -o %PPID -x "rclone-upload.cron"; then
-   exit 1
+#!/bin/bash
+
+PIDFILE=/tmp/rclone-upload.pid
+if [ -f $PIDFILE ]
+then
+  PID=$(cat $PIDFILE)
+  ps -p $PID > /dev/null 2>&1
+  if [ $? -eq 0 ]
+  then
+    echo "Job is already running"
+    exit 1
+  else
+    ## Process not found assume not running
+    echo $$ > $PIDFILE
+    if [ $? -ne 0 ]
+    then
+      echo "Could not create PID file"
+      exit 1
+    fi
+  fi
+else
+  echo $$ > $PIDFILE
+  if [ $? -ne 0 ]
+  then
+    echo "Could not create PID file"
+    exit 1
+  fi
 fi
 
 LOGFILE="/home/plex/logs/rclone-upload.cron"
@@ -20,4 +45,5 @@ if find $FROM* -type f -mmin +15 | read
   rclone move --config=/path/rclone.conf $FROM $TO -c --no-traverse --transfers=300 --checkers=300 --delete-after --min-age 15m --log-file=$LOGFILE
   echo "$(date "+%d.%m.%Y %T") RCLONE UPLOAD ENDED" | tee -a $LOGFILE
 fi
+rm $PIDFILE
 exit