diff --git a/inc/LDC1612.h b/inc/LDC1612.h
index 96172f0..34ded69 100644
--- a/inc/LDC1612.h
+++ b/inc/LDC1612.h
@@ -45,7 +45,7 @@ typedef enum {
     I2C_STOP
 } i2c_process_enum;
 
-#define I2C_SPEED 400000
+#define I2C_SPEED 100000
 #define RCU_IR_GPIO RCU_GPIOF
 #define RCU_I2C RCU_I2C0
 #define I2C_SCL_PORT GPIOF