diff --git a/README.md b/README.md
index 3d1012a..7a83eb6 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ A browser-based user interface written in HTML an Java Script allows to operate
 <img src="./images/onion480x480.PNG">*Web interface of Blu-ray microscope, showing onion cells*</img>
 
 ## Important Note
-**The ESP32 API has changed from versions 2.X (based on ESP-IDF 4.4) to version 3.0 (based on ESP-IDF 5.1) of the Arduino ESP32 core. Use version 2.X or try the migrated branch.
+**The ESP32 API has changed from versions 2.X (based on ESP-IDF 4.4) to version 3.0 (based on ESP-IDF 5.1) of the Arduino ESP32 core. Only compiles against version 2.X.
 Find more information here: [Migration from 2.x to 3.0](https://docs.espressif.com/projects/arduino-esp32/en/latest/migration_guides/2.x_to_3.0.html)**
 
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