diff --git a/firmware/export/i2c.h b/firmware/export/i2c.h
index 21ec809f13..08562b198c 100644
--- a/firmware/export/i2c.h
+++ b/firmware/export/i2c.h
@@ -21,6 +21,8 @@
 #ifndef I2C_H
 #define I2C_H
 
+#include "config.h"
+
 extern void i2c_init(void) INIT_ATTR;
 extern void i2c_begin(void);
 extern void i2c_end(void);