diff --git a/firmware/core/i2c/i2c.h b/firmware/core/i2c/i2c.h
index 9ed49be..6a9b5a6 100644
--- a/firmware/core/i2c/i2c.h
+++ b/firmware/core/i2c/i2c.h
@@ -37,7 +37,7 @@
 #define I2CSTATE_SLA_NACK 0x103
 #define I2CSTATE_ARB_LOSS 0x104
 
-#define FAST_MODE_PLUS    0
+#define FAST_MODE_PLUS    1
 
 #define I2C_BUFSIZE       6
 #define MAX_TIMEOUT       0x00FFFFFF