diff --git a/build/Android.bp b/build/Android.bp
index 5298f71..a7d56f8 100644
--- a/build/Android.bp
+++ b/build/Android.bp
@@ -31,12 +31,4 @@
     "secilc",
     "version_policy",
   ],
-  version: {
-    py2: {
-      enabled: true,
-    },
-    py3: {
-      enabled: false,
-    },
-  },
 }
diff --git a/build/build_sepolicy.py b/build/build_sepolicy.py
old mode 100644
new mode 100755
index 285bfea..ce0548a
--- a/build/build_sepolicy.py
+++ b/build/build_sepolicy.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+#
 # Copyright 2018 - The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/build/file_utils.py b/build/file_utils.py
index 9f95f52..e3210ed 100644
--- a/build/file_utils.py
+++ b/build/file_utils.py
@@ -39,7 +39,7 @@
         patterns.extend(open(f).readlines())
 
     # Copy lines that are not in the pattern.
-    tmp_output = tempfile.NamedTemporaryFile()
+    tmp_output = tempfile.NamedTemporaryFile(mode='w+')
     with open(input_file, 'r') as in_file:
         tmp_output.writelines(line for line in in_file.readlines()
                               if line not in patterns)