diff --git a/libcontainer/cgroups/systemd/dbus.go b/libcontainer/cgroups/systemd/dbus.go
index 3e547e282b5..96e3167ddaf 100644
--- a/libcontainer/cgroups/systemd/dbus.go
+++ b/libcontainer/cgroups/systemd/dbus.go
@@ -80,8 +80,6 @@ func (d *dbusConnManager) resetConnection(conn *systemdDbus.Conn) {
 	}
 }
 
-var errDbusConnClosed = dbus.ErrClosed.Error()
-
 // retryOnDisconnect calls op, and if the error it returns is about closed dbus
 // connection, the connection is re-established and the op is retried. This helps
 // with the situation when dbus is restarted and we have a stale connection.
@@ -92,7 +90,7 @@ func (d *dbusConnManager) retryOnDisconnect(op func(*systemdDbus.Conn) error) er
 			return err
 		}
 		err = op(conn)
-		if !isDbusError(err, errDbusConnClosed) {
+		if err != dbus.ErrClosed {
 			return err
 		}
 		d.resetConnection(conn)