diff --git a/Adafruit_TSL2561_U.cpp b/Adafruit_TSL2561_U.cpp
index daf275a..1cbe777 100644
--- a/Adafruit_TSL2561_U.cpp
+++ b/Adafruit_TSL2561_U.cpp
@@ -76,7 +76,7 @@ Adafruit_TSL2561_Unified::Adafruit_TSL2561_Unified(uint8_t addr, int32_t sensorI
 /**************************************************************************/
 boolean Adafruit_TSL2561_Unified::begin()
 {
-  wire = &Wire;
+  _i2c = &Wire;
   _i2c->begin();
   return init();
 }
@@ -91,7 +91,7 @@ boolean Adafruit_TSL2561_Unified::begin()
 /**************************************************************************/
 boolean Adafruit_TSL2561_Unified::begin(TwoWire *theWire)
 {
-  wire = theWire;
+  _i2c = theWire;
   _i2c-> begin();
   return init();
 }
diff --git a/Adafruit_TSL2561_U.h b/Adafruit_TSL2561_U.h
index 1f93d15..e1aa191 100644
--- a/Adafruit_TSL2561_U.h
+++ b/Adafruit_TSL2561_U.h
@@ -44,7 +44,7 @@
 #define TSL2561_BLOCK_BIT         (0x10)    ///< 1 = using block read/write
 
 #define TSL2561_CONTROL_POWERON   (0x03)    ///< Control register setting to turn on
-#define TSL2561_CONTROL_POWEROFF  (0x00))   ///< Control register setting to turn off
+#define TSL2561_CONTROL_POWEROFF  (0x00)    ///< Control register setting to turn off
 
 #define TSL2561_LUX_LUXSCALE      (14)      ///< Scale by 2^14
 #define TSL2561_LUX_RATIOSCALE    (9)       ///< Scale ratio by 2^9
@@ -194,7 +194,7 @@ class Adafruit_TSL2561_Unified : public Adafruit_Sensor {
   
   void     enable (void);
   void     disable (void);
-  void     write8 (uint8_t reg, uint32_t value);
+  void     write8 (uint8_t reg, uint8_t value);
   uint8_t  read8 (uint8_t reg);
   uint16_t read16 (uint8_t reg);
   void     getData (uint16_t *broadband, uint16_t *ir);