diff --git a/firmware/config/boards/hellen/alphax-4chan/board.mk b/firmware/config/boards/hellen/alphax-4chan/board.mk
index 2a9ca16937..5730cc0d06 100644
--- a/firmware/config/boards/hellen/alphax-4chan/board.mk
+++ b/firmware/config/boards/hellen/alphax-4chan/board.mk
@@ -9,7 +9,8 @@ DDEFS += -DEFI_SOFTWARE_KNOCK=TRUE -DSTM32_ADC_USE_ADC3=TRUE
 
 DDEFS += -DADC_MUX_PIN=Gpio::F2
 
-DDEFS += -DLUA_USER_HEAP=27000
+# 37K would not fit
+DDEFS += -DLUA_USER_HEAP=32000
 
 # pretty temporary
 DDEFS += -DDISABLE_PIN_STATE_VALIDATION=TRUE