diff --git a/README.md b/README.md
index 5316239..b7f2cc9 100755
--- a/README.md
+++ b/README.md
@@ -22,3 +22,7 @@ GDBM is the default one. LMDB needs to have created directory for database files
 
 `./db_convert --src access.db --dest lmdb --lmdb`
 * Your new file with converted database will be created
+
+### Example systemd service
+The directory `units` contains example of the service file. It could be used as template
+for database conversion within system upgrade.
diff --git a/units/libdb-convert.service b/units/libdb-convert.service
new file mode 100644
index 0000000..46667b1
--- /dev/null
+++ b/units/libdb-convert.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=Convert libdb(BerkeleyDB) database
+After=local-fs.target
+ConditionPathExists=/etc/vsftpd/example
+ConditionPathExists=!/etc/vsftpd/example.gdbm
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/db_converter --src example --dest example.gdbm
+RemainAfterExit=true
+
+[Install]
+WantedBy=default.target