diff --git a/lib/bitpacker.js b/lib/bitpacker.js
index 219380f..05d9bd9 100644
--- a/lib/bitpacker.js
+++ b/lib/bitpacker.js
@@ -22,6 +22,7 @@ module.exports = function(dataIn, width, height, options) {
 
   var maxValue = 255;
   var inBpp = constants.COLORTYPE_TO_BPP_MAP[options.inputColorType];
+  if (inBpp == 4 && !options.inputHasAlpha) inBpp = 3;
   var outBpp = constants.COLORTYPE_TO_BPP_MAP[options.colorType];
   if (options.bitDepth === 16) {
     maxValue = 65535;
@@ -80,7 +81,7 @@ module.exports = function(dataIn, width, height, options) {
         blue = Math.min(Math.max(Math.round((1 - alpha) * bgColor.blue + alpha * blue), 0), maxValue);
       }
     }
-    return {red, green, blue, alpha};
+    return {red: red, green: green, blue: blue, alpha: alpha};
   }
 
   for (var y = 0; y < height; y++) {