diff --git a/packages/jack/JavaTransformer.java.patch b/packages/jack/JavaTransformer.java.patch
new file mode 100644
index 000000000..b50c593fb
--- /dev/null
+++ b/packages/jack/JavaTransformer.java.patch
@@ -0,0 +1,12 @@
+diff -u -r ../orig/jill/src/com/android/jill/frontend/java/JavaTransformer.java ./jill/src/com/android/jill/frontend/java/JavaTransformer.java
+--- ../orig/jill/src/com/android/jill/frontend/java/JavaTransformer.java	2016-10-03 17:38:30.000000000 -0400
++++ ./jill/src/com/android/jill/frontend/java/JavaTransformer.java	2016-10-05 19:44:23.446481214 -0400
+@@ -197,7 +197,7 @@
+   @Nonnull
+   private OutputVFS wrapOutputVFS(@Nonnull VFS baseVFS) {
+     MessageDigestCodec mdCodec = new MessageDigestCodec();
+-    Service service = mdCodec.parseString(new CodecContext(), "SHA");
++    Service service = mdCodec.parseString(new CodecContext(), "MD5");
+ 
+     try {
+       return new GenericOutputVFS(new DeflateFS(new MessageDigestFS(