diff --git a/README.md b/README.md
index 73f09bd..202c904 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,9 @@ and dashes an alike are okay. Put the SD card into the SD card slot.
 Copy `include/config.sample.h` to `include/config.h`. Modify it to at
 least contain the correct login details for your WiFi.
 
-The code then should compile in PlatformIO without errors.
+The code then should compile in PlatformIO without errors. Upload it
+to your ESP32. After that, upload static files using PlatformIO's task
+"Upload file system image".
 
 The serial console in PlatformIO should give you more or less useful
 messages about what's going on. There will also be a line saying
@@ -142,4 +144,4 @@ will only play in December. On December 1st, only track 1
 will play. On December 2nd, track 2 followed by track 1. On
 December 3rd, tracks 3, 1 and 2. From December 24th on, track
 24 followed by tracks 1-23. So your kid will get the "daily track"
-first, followed by all previous tags in the right order.
\ No newline at end of file
+first, followed by all previous tags in the right order.