diff --git a/libraries/DAC8551/DAC8551.cpp b/libraries/DAC8551/DAC8551.cpp
index 95a18a6d..feb9eaa8 100644
--- a/libraries/DAC8551/DAC8551.cpp
+++ b/libraries/DAC8551/DAC8551.cpp
@@ -2,7 +2,7 @@
 //    FILE: DAC8551.cpp
 //  AUTHOR: Rob Tillaart
 // PURPOSE: Arduino library for DAC8551 SPI Digital Analog Convertor
-// VERSION: 0.2.2
+// VERSION: 0.2.3
 //     URL: https://github.com/RobTillaart/DAC8551
 //
 //  HISTORY
@@ -13,6 +13,7 @@
 //  0.2.0   2020-12-18  add slaveSelect to hardware SPI
 //  0.2.1   2020-12-18  add arduino-ci + unit tests
 //  0.2.2   2021-02-04  add DAC8550 DAC8501 DAC8501 derived class + minor refactor
+//  0.2.3   2021-06-02  compile ESP32
 
 
 #include "DAC8551.h"
@@ -75,7 +76,7 @@ uint16_t DAC8551::getValue()
 
 void DAC8551::setPowerDown(uint8_t powerDownMode)
 {
-  _register = powerDownMode;
+  _register = (powerDownMode & 0x03);
   updateDevice();
 }
 
diff --git a/libraries/DAC8551/DAC8551.h b/libraries/DAC8551/DAC8551.h
index 357e9627..7ae7d7bb 100644
--- a/libraries/DAC8551/DAC8551.h
+++ b/libraries/DAC8551/DAC8551.h
@@ -4,16 +4,17 @@
 //  AUTHOR: Rob Tillaart
 // PURPOSE: Arduino library for DAC8551 SPI Digital Analog Convertor  
 //          could work with DAC8550, not tested
-// VERSION: 0.2.2
+// VERSION: 0.2.3
 // HISTORY: See DAC8551.cpp
 //     URL: https://github.com/RobTillaart/DAC8551
 //
 
 
+#include "Arduino.h"
 #include "SPI.h"
 
 
-#define DAC8551_LIB_VERSION            (F("0.2.2"))
+#define DAC8551_LIB_VERSION            (F("0.2.3"))
 
 
 #define DAC8551_POWERDOWN_NORMAL       0
diff --git a/libraries/DAC8551/library.json b/libraries/DAC8551/library.json
index d04fde83..2a815be7 100644
--- a/libraries/DAC8551/library.json
+++ b/libraries/DAC8551/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/DAC8551"
   },
-  "version": "0.2.2",
+  "version": "0.2.3",
   "license": "MIT",
   "frameworks": "arduino",
   "platforms": "*"
diff --git a/libraries/DAC8551/library.properties b/libraries/DAC8551/library.properties
index ab3e1f2e..d85961f1 100644
--- a/libraries/DAC8551/library.properties
+++ b/libraries/DAC8551/library.properties
@@ -1,5 +1,5 @@
 name=DAC8551
-version=0.2.2
+version=0.2.3
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino library for DAC8501, DAC8531, DAC8550 and DAC8551 SPI 16-bit Digital Analog Convertor