diff --git a/README.md b/README.md
index ff58647..9d17171 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ caller must already possess.
 
 - Server image: `server/build.sh` (podman build + push to
   `mysources.co.uk/michal/internaluploader-server:<date>-<sha>`).
-- APK: `cd android && JAVA_HOME=/usr/lib/jvm/java-21-openjdk ./gradlew assembleRelease`
+- APK: `cd android && JAVA_HOME=~/.jdks/jdk17 ./gradlew assembleRelease`
   (release signing reads `~/.internaluploader/signing.properties`; see
   `android/README.md`). Publish to the private F-Droid repo with
   `thelab-kubernetes-pulumi/scripts/fdroid/publish.py add <apk>`.