diff --git a/SilicaViewer/Document.swift b/SilicaViewer/Document.swift
index f6c405c..2c47245 100644
--- a/SilicaViewer/Document.swift
+++ b/SilicaViewer/Document.swift
@@ -240,7 +240,7 @@ class Document: NSDocument {
             return .luminosity
         }
         
-        return .sourceAtop
+        return .sourceOver
     }
     
     func parseSilicaLayer(archive: Archive, dict: NSDictionary, isMask: Bool) -> SilicaLayer? {
@@ -320,7 +320,7 @@ class Document: NSDocument {
                 let render: CGColorRenderingIntent = .defaultIntent
                 let rgbColorSpace = isMask ? CGColorSpaceCreateDeviceGray() : info.colorSpace
                 
-                let bitmapInfo = CGBitmapInfo(rawValue: (isMask ? CGImageAlphaInfo.none : CGImageAlphaInfo.last).rawValue).union(.byteOrder32Big)
+                let bitmapInfo = CGBitmapInfo(rawValue: (isMask ? CGImageAlphaInfo.none : CGImageAlphaInfo.premultipliedLast).rawValue).union(.byteOrder32Big)
                 let providerRef: CGDataProvider? = CGDataProvider(data: imageData as CFData)
                 
                 guard let cgimage = CGImage(width: width, height: height, bitsPerComponent: 8, bitsPerPixel: 8 * numChannels, bytesPerRow: width * numChannels, space: rgbColorSpace, bitmapInfo: bitmapInfo, provider: providerRef!, decode: nil, shouldInterpolate: false, intent: render) else {
@@ -504,9 +504,7 @@ class Document: NSDocument {
                 var maskContext: CGContext?
       
                 let kernel = getBlendKernel(layer)
-                
-                Swift.print(layer.name + " is " + kernel!.name)
-                            
+                                            
                 if layer.mask != nil {
                     let grayColorSpace = CGColorSpaceCreateDeviceGray()
                     let maskBitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.none.rawValue).union(.byteOrder16Big)