diff --git a/apkdiff/apkdiff.py b/apkdiff/apkdiff.py
index ff1cc4981..da19bf59d 100755
--- a/apkdiff/apkdiff.py
+++ b/apkdiff/apkdiff.py
@@ -35,10 +35,10 @@ class ApkDiff:
         return True
 
     def compareEntries(self, sourceZip, destinationZip):
-        sourceInfoList      = filter(lambda sourceInfo: sourceInfo.filename not in self.IGNORE_FILES, sourceZip.infolist())
-        destinationInfoList = filter(lambda destinationInfo: destinationInfo.filename not in self.IGNORE_FILES, destinationZip.infolist())
+        sourceInfoList      = list(filter(lambda sourceInfo: sourceInfo.filename not in self.IGNORE_FILES, sourceZip.infolist()))
+        destinationInfoList = list(filter(lambda destinationInfo: destinationInfo.filename not in self.IGNORE_FILES, destinationZip.infolist()))
 
-        if len(list(sourceInfoList)) != len(list(destinationInfoList)):
+        if len(sourceInfoList) != len(destinationInfoList):
             print("APK info lists of different length!")
             return False
 
@@ -61,7 +61,7 @@ class ApkDiff:
         sourceChunk      = sourceFile.read(1024)
         destinationChunk = destinationFile.read(1024)
 
-        while sourceChunk != "" or destinationChunk != "":
+        while sourceChunk != b"" or destinationChunk != b"":
             if sourceChunk != destinationChunk:
                 return False