diff --git a/static/build.html b/static/build.html
index 29da16b1..c27142da 100644
--- a/static/build.html
+++ b/static/build.html
@@ -377,7 +377,7 @@ cd ../..</pre>
 
                     <pre>yarn install --cwd vendor/adevtool/
 source build/envsetup.sh
-m aapt2</pre>
+TARGET_RELEASE=ap1a m aapt2</pre>
 
                     <p>Download, extract and prepare the vendor files:</p>