Barker was snapped up by Southend boss Paul Sturrock at the start of the season after being released by Plymouth Argyle and the former Cardiff City and Queens Park Rangers defender has made a good start to his League Two career.
But after Saturday’s defeat to Northampton, Southend led 1-0 before gifting two goals to the Cobblers, Barker has called for the Shrimpers defence to cut out the mistakes.
Barker wants to see a return to form that saw his side concede just the one goal in their previous three fixtures in time for the clash with Morecambe on Saturday.
“It’s very disappointing because I think we lost the game rather than them winning it, to be honest,” said the experienced defender.
“We had been doing OK at the back until Saturday and we want to get back to being like that again.
“We made two basic errors which led to their goals, which is disappointing, but now we need to start again against Morecambe this weekend and start to kick on again.”
Bottom of the table Morecambe provide Southend with the perfect opportunity to bounce straight back and at home Southend are 1/1 to pick up their third win of the season.
Morecambe have lost all three of their away games this season and the 560 mile round trip to the Essex coastline is unlikely to provide them with their first win.
Morecambe are 13/5 to taste victory in Essex. See the full League Two betting market here.