diff --git a/apkdiff.py b/apkdiff.py
index 6e26a9e65..ca12e169d 100644
--- a/apkdiff.py
+++ b/apkdiff.py
@@ -8,7 +8,7 @@ def compareFiles(first, second):
 		if firstBytes != secondBytes:
 			return False
 
-		if firstBytes != b"" or secondBytes != b"":
+		if firstBytes == b"":
 			break
 
 	return True