diff --git a/buildroot-external/board/raspberrypi/rpi5-64/config.txt b/buildroot-external/board/raspberrypi/rpi5-64/config.txt
index 1a2152d7e..4d92fa19b 100755
--- a/buildroot-external/board/raspberrypi/rpi5-64/config.txt
+++ b/buildroot-external/board/raspberrypi/rpi5-64/config.txt
@@ -10,9 +10,6 @@
 # Enable audio (loads snd_bcm2835)
 dtparam=audio=on
 
-# Additional overlays and parameters are documented
-# /boot/firmware/overlays/README
-
 # Automatically load overlays for detected cameras
 camera_auto_detect=1
 
diff --git a/buildroot-external/board/raspberrypi/rpi5-64/hassos-hook.sh b/buildroot-external/board/raspberrypi/rpi5-64/hassos-hook.sh
index 1e6b8d460..f0954de6a 100755
--- a/buildroot-external/board/raspberrypi/rpi5-64/hassos-hook.sh
+++ b/buildroot-external/board/raspberrypi/rpi5-64/hassos-hook.sh
@@ -9,6 +9,10 @@ function hassos_pre_image() {
     gzip --stdout "${BINARIES_DIR}"/Image > "${BOOT_DATA}/slot-A/kernel_2712.img"
     cp -r "${BINARIES_DIR}/overlays/" "${BOOT_DATA}/slot-A/"
     cp "${BINARIES_DIR}"/*.dtbo "${BOOT_DATA}/slot-A/overlays/" 2>/dev/null || true
+    # README needs to be present, otherwise os_prefix is not
+    # prepended implicitly to the overlays' path, see:
+    # https://www.raspberrypi.com/documentation/computers/config_txt.html#overlay_prefix
+    touch "${BOOT_DATA}/slot-A/overlays/README" 2>/dev/null || true
     cp "${BOARD_DIR}/config.txt" "${BOOT_DATA}/config.txt"
     cp "${BOARD_DIR}/cmdline.txt" "${BOOT_DATA}/cmdline.txt"
 }