diff --git a/Adafruit_TSL2561.cpp b/Adafruit_TSL2561_U.cpp
similarity index 99%
rename from Adafruit_TSL2561.cpp
rename to Adafruit_TSL2561_U.cpp
index a68fd10..2b4408e 100644
--- a/Adafruit_TSL2561.cpp
+++ b/Adafruit_TSL2561_U.cpp
@@ -23,7 +23,7 @@
 #include <util/delay.h>
 #include <stdlib.h>
 
-#include "Adafruit_TSL2561.h"
+#include "Adafruit_TSL2561_U.h"
 
 /*========================================================================*/
 /*                          PRIVATE FUNCTIONS                             */
diff --git a/Adafruit_TSL2561.h b/Adafruit_TSL2561_U.h
similarity index 100%
rename from Adafruit_TSL2561.h
rename to Adafruit_TSL2561_U.h
diff --git a/examples/sensorapi/sensorapi.pde b/examples/sensorapi/sensorapi.pde
index 8c1423d..a44a3d3 100644
--- a/examples/sensorapi/sensorapi.pde
+++ b/examples/sensorapi/sensorapi.pde
@@ -1,6 +1,6 @@
 #include <Wire.h>
 #include <Adafruit_Sensor.h>
-#include <Adafruit_TSL2561.h>
+#include <Adafruit_TSL2561_U.h>
 
 /* This driver uses the Adafruit unified sensor library (Adafruit_Sensor),
    which provides a common 'type' for sensor data and some helper functions.