diff --git a/hyperroid/README.md b/hyperroid/README.md
index 995fd971..b703546d 100644
--- a/hyperroid/README.md
+++ b/hyperroid/README.md
@@ -1,8 +1,8 @@
 This directory contains the sources of the Android port of HyperRogue.
 
 You should copy the sound and music files from HyperRogue's main directory to
-the directories here; also `language-data.cpp` file generated during HyperRogue's build
-process is required. This is done by the script `copy.sh`.
+the directories here; also `autohdr.h` and `language-data.cpp` files generated during HyperRogue's build
+process are required. This is done by the script `copy.sh`.
 
 The 'low quality' versions of music files are already in their location (copying them
 is uncommented in copy.sh).