diff --git a/platforms/avr/drivers/i2c_master.h b/platforms/avr/drivers/i2c_master.h
index 2d95846db5..04ef126c80 100644
--- a/platforms/avr/drivers/i2c_master.h
+++ b/platforms/avr/drivers/i2c_master.h
@@ -19,6 +19,8 @@
 
 #pragma once
 
+#include <stdint.h>
+
 #define I2C_READ 0x01
 #define I2C_WRITE 0x00