diff --git a/firmware/config/boards/hellen/uaefi/board_configuration.cpp b/firmware/config/boards/hellen/uaefi/board_configuration.cpp
index 266edfdb41..f2abf9f253 100644
--- a/firmware/config/boards/hellen/uaefi/board_configuration.cpp
+++ b/firmware/config/boards/hellen/uaefi/board_configuration.cpp
@@ -42,6 +42,7 @@ static void setupDefaultSensorInputs() {
 #include "hellen_leds_100.cpp"
 
 void setBoardConfigOverrides() {
+  chThdSleepMilliseconds(500); // experiment for https://github.com/andreika-git/hellen-one/issues/353
 	setHellenMegaEnPin();
 	setHellenVbatt();