The Overconfident Defect Scanner

In a chip fab, $1\%$ of chips coming off the line are defective. An optical scanner flags $99\%$ of defective chips (its sensitivity) and correctly passes $95\%$ of good chips (its specificity), meaning $5\%$ of good chips get wrongly flagged. A chip is pulled at random from the line and the scanner flags it. What is the probability the chip is actually defective?