diff --git a/apkdiff.py b/apkdiff.py
index ca12e169d..6da753ddc 100644
--- a/apkdiff.py
+++ b/apkdiff.py
@@ -3,12 +3,12 @@ from zipfile import ZipFile
 
 def compareFiles(first, second):
 	while True:
-		firstBytes = first.read(4096);
-		secondBytes = second.read(4096);
+		firstBytes = first.read(4096)
+		secondBytes = second.read(4096)
 		if firstBytes != secondBytes:
 			return False
 
-		if firstBytes == b"":
+		if firstBytes == b"" and secondBytes == b"":
 			break
 
 	return True
diff --git a/apkfrombundle.py b/apkfrombundle.py
index aacfa887c..a0f92e8ca 100644
--- a/apkfrombundle.py
+++ b/apkfrombundle.py
@@ -2,31 +2,31 @@ import sys
 from zipfile import ZipFile
 
 def compareFiles(first, second):
-	while True:
-		firstBytes = first.read(4096);
-		secondBytes = second.read(4096);
-		if firstBytes != secondBytes:
-			return False
+    while True:
+        firstBytes = first.read(4096)
+        secondBytes = second.read(4096)
+        if firstBytes != secondBytes:
+            return False
 
-		if firstBytes != b"" or secondBytes != b"":
-			break
+        if firstBytes == b"" and secondBytes == b"":
+            break
+
+    return True
 
-	return True
- 
 def remove_prefix(text, prefix):
     if text.startswith(prefix):
         return text[len(prefix):]
     return text
- 
+
 def compareApkFromBundle(bundle, apk):
-    FILES_TO_IGNORE = ["META-INF/MANIFEST.MF", "META-INF/CERT.RSA", "META-INF/CERT.SF", "resources.arsc"]
+    FILES_TO_IGNORE = ["resources.arsc", "stamp-cert-sha256"]
 
     apkZip = ZipFile(apk, 'r')
     bundleZip = ZipFile(bundle, 'r')
 
     firstList = list(filter(lambda info: info.filename not in FILES_TO_IGNORE, apkZip.infolist()))
     secondList = list(filter(lambda secondInfo: secondInfo.filename not in FILES_TO_IGNORE, bundleZip.infolist()))
-    
+
     for apkInfo in firstList:
         if (apkInfo.filename.startswith("META-INF/")):
             continue
@@ -56,16 +56,16 @@ def compareApkFromBundle(bundle, apk):
         if found == False:
             print("file %s not found in APK" % apkInfo.filename)
             return False
-        
+
     return True
 
 if __name__ == '__main__':
-	if len(sys.argv) != 3:
-		print("Usage: apkfrombundle <pathToBundle> <pathToApk>")
-		sys.exit(1)
-    
+    if len(sys.argv) != 3:
+        print("Usage: apkfrombundle <pathToBundle> <pathToApk>")
+        sys.exit(1)
 
-	if sys.argv[1] == sys.argv[2] or compareApkFromBundle(sys.argv[1], sys.argv[2]) == True:
-		print("APKs are from bundle!")
-	else:
-		print("APKs are different!")
+
+    if sys.argv[1] == sys.argv[2] or compareApkFromBundle(sys.argv[1], sys.argv[2]) == True:
+        print("APK from bundle!")
+    else:
+        print("APK has difference!")