diff --git a/clients/android/assets/Makefile b/clients/android/assets/Makefile
index 5f70fcb95..e9a450b18 100644
--- a/clients/android/assets/Makefile
+++ b/clients/android/assets/Makefile
@@ -1,2 +1,5 @@
 all:
 	GOOS=linux GOARCH=arm CGO_ENABLED=0 go build -o camput.arm camlistore.org/cmd/camput
+	/bin/echo -n "package org.camlistore; public final class ChildProcessConfig { // " > ../gen/org/camlistore/ChildProcessConfig.java
+	openssl sha1 camput.arm >> ../gen/org/camlistore/ChildProcessConfig.java
+	/bin/echo "}" >> ../gen/org/camlistore/ChildProcessConfig.java