Mark Warburton has said that Rangers must improve in the final third after their 2-1 Scottish Championship victory over Dumbarton.

The Gers stretched their unbeaten run to 11 matches, but took over an hour to break the deadlock in Saturday's match.

"I think in the first half we had to take more care in the final third, we lost our shape a little bit which we spoke about at half time," Warburton told reporters. "But it is a tough place to come, they work very hard and are well organised. We were very respectful of that and knew the threat they posed but we got the reward in the end.

"I think you are seeing teams coming in very solid and central to stop us passing through and splitting units which you would expect.

"We have to be brighter and quicker. If we take more care with the ball in the final third we will keep hurting teams."

Rangers are currently seven points clear of second-place Falkirk in the Scottish Championship table.