diff --git a/apsalar/nc-sync b/apsalar/nc-sync
index 310a79f..eea0a2d 100755
--- a/apsalar/nc-sync
+++ b/apsalar/nc-sync
@@ -1,6 +1,22 @@
 #!/bin/sh
 
-NC_DIR="$HOME/Nextcloud"
-NC_URL="https://cloud.criminallycute.fi"
+(
+  if flock -n 9
+    then
+    notify-send 'Not doing the critical operation (lock present).'
+    exit;
+  fi
+
+  # Needed for cronjob
+  source /home/siina/.config/private.env
+
+  NC_DIR="/home/siina/Nextcloud"
+  NC_URL="https://cloud.criminallycute.fi"
+
+  notify-send "Nextcloud Sync Syncing ..."
+  nextcloudcmd -u $NC_USER -p $NC_PASS $NC_DIR $NC_URL
+  notify-send "Nextcloud Sync Done syncing"
+
+) 9>'/tmp/nc-sync.lock'
+rm -f '/tmp/nc-sync.lock'
 
-nextcloudcmd -s -u $NC_USER -p $NC_PASS $NC_DIR $NC_URL