diff --git a/I2Cdev_rda.h b/I2Cdev_rda.h
index 3c8f81d..56850f2 100644
--- a/I2Cdev_rda.h
+++ b/I2Cdev_rda.h
@@ -49,7 +49,7 @@ THE SOFTWARE.
 // -----------------------------------------------------------------------------
 // I2C interface implementation setting
 // -----------------------------------------------------------------------------
-#define I2CDEV_IMPLEMENTATION       I2CDEV_ARDUINO_FASTWIRE
+#define I2CDEV_IMPLEMENTATION       I2CDEV_ARDUINO_WIRE
 //#define I2CDEV_IMPLEMENTATION       I2CDEV_BUILTIN_FASTWIRE
 
 // comment this out if you are using a non-optimal IDE/implementation setting