         let sliceSpace = visibleAngleCount <= 1 ? 0.0 : dataSet.sliceSpace
 
         CGContextSaveGState(context)
+        
+        let pathInner = CGPathCreateMutable()
+        CGPathAddArc(pathInner, nil, circleBox.midX, circleBox.midY, centerLineRadius, CGFloat(-M_PI_2), CGFloat(M_PI_2*3), false)
+        CGPathCloseSubpath(pathInner)
+        
+        
+        CGContextBeginPath(context)
+        CGContextAddPath(context, pathInner)
+        CGContextSetStrokeColorWithColor(context,  UIColor(red: 215/255.0, green: 215/255.0, blue: 215/255.0, alpha: 1.0).CGColor)
+        CGContextStrokePath(context)
         
         for j in 0 ..< entryCount
         {

                    
                    CGPathCloseSubpath(path)
                    
                    CGContextBeginPath(context)
                    CGContextAddPath(context, path)
                    CGContextEOFillPath(context)

        let radius = chart.radius
        let drawInnerArc = chart.drawHoleEnabled && !chart.drawSlicesUnderHoleEnabled
        let userInnerRadius = drawInnerArc ? radius * chart.holeRadiusPercent : 0.0
        let linePointRadius = (radius - userInnerRadius) / 2.0;
        let centerLineRadius = innerRadius + linePointRadius;
        
        var visibleAngleCount = 0
        for j in 0 ..< entryCount
