diff --git a/readme-prepare-android.md b/readme-prepare-android.md
index 9b82fec..5801328 100644
--- a/readme-prepare-android.md
+++ b/readme-prepare-android.md
@@ -8,7 +8,8 @@ A good description of what you'll need can be found here:
 You don't need Android Studio, so search for **command line tools** on the SDK
 download page.
 
-The NDK version that will work with both ECL and Qt5.15 is `21.3`.
+The NDK version to use depends on the Qt version. Qt5.15 requires `21.3`, Qt6
+requires `25c`.
 
 The latest working SDK for Qt5.15 is e.g.
 `/opt/android/sdk/platforms/android-34`. If you find versions greater than 34