diff --git a/src/lib/drivers/device/i2c.h b/src/lib/drivers/device/i2c.h
index 8e4de55839..9a0f7391a5 100644
--- a/src/lib/drivers/device/i2c.h
+++ b/src/lib/drivers/device/i2c.h
@@ -38,6 +38,8 @@
 #include "posix/I2C.hpp"
 #endif
 
+#include <board_config.h>
+
 
 static const int i2c_bus_options[] = {
 #ifdef PX4_I2C_BUS_EXPANSION