diff --git a/firmware/rusefi.cpp b/firmware/rusefi.cpp
index f7e726f809..88d01d3a30 100644
--- a/firmware/rusefi.cpp
+++ b/firmware/rusefi.cpp
@@ -110,6 +110,7 @@
 #include "pin_repository.h"
 #include "flash_main.h"
 #include "algo.h"
+#include "custom_engine.h"
 
 #if EFI_HD44780_LCD
 #include "lcd_HD44780.h"