diff --git a/libraries/MCP23017_RT/CHANGELOG.md b/libraries/MCP23017_RT/CHANGELOG.md
index cc33e87a..735e1633 100644
--- a/libraries/MCP23017_RT/CHANGELOG.md
+++ b/libraries/MCP23017_RT/CHANGELOG.md
@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.7.0] 2024-06-06
+- fix #33 bug, kudos to JelleWilbrink
+
+----
+
 ## [0.6.3] 2024-05-25
 - sync MCP23S17, add several interrupt functions (experimental)
 - add **MCP23x17_registers.h**
diff --git a/libraries/MCP23017_RT/MCP23017.cpp b/libraries/MCP23017_RT/MCP23017.cpp
index 44ed713f..c5ae5187 100644
--- a/libraries/MCP23017_RT/MCP23017.cpp
+++ b/libraries/MCP23017_RT/MCP23017.cpp
@@ -1,7 +1,7 @@
 //
 //    FILE: MCP23017.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.6.3
+// VERSION: 0.7.0
 // PURPOSE: Arduino library for I2C MCP23017 16 channel port expander
 //    DATE: 2019-10-12
 //     URL: https://github.com/RobTillaart/MCP23017_RT
@@ -756,7 +756,7 @@ bool MCP23017::writeReg16(uint8_t reg, uint16_t value)
   _wire->beginTransmission(_address);
   _wire->write(reg);
   _wire->write(value >> 8);
-  _wire->write(value && 0xFF);
+  _wire->write(value & 0xFF);
   if (_wire->endTransmission() != 0)
   {
     _error = MCP23017_I2C_ERROR;
diff --git a/libraries/MCP23017_RT/MCP23017.h b/libraries/MCP23017_RT/MCP23017.h
index 341e01c3..86036b6c 100644
--- a/libraries/MCP23017_RT/MCP23017.h
+++ b/libraries/MCP23017_RT/MCP23017.h
@@ -2,7 +2,7 @@
 //
 //    FILE: MCP23017.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.6.3
+// VERSION: 0.7.0
 // PURPOSE: Arduino library for I2C MCP23017 16 channel port expander
 //    DATE: 2019-10-12
 //     URL: https://github.com/RobTillaart/MCP23017_RT
@@ -15,7 +15,7 @@
 #include "MCP23x17_registers.h"
 
 
-#define MCP23017_LIB_VERSION              (F("0.6.3"))
+#define MCP23017_LIB_VERSION              (F("0.7.0"))
 
 #define MCP23017_OK                       0x00
 #define MCP23017_PIN_ERROR                0x81
diff --git a/libraries/MCP23017_RT/library.json b/libraries/MCP23017_RT/library.json
index 25ec782a..61a36101 100644
--- a/libraries/MCP23017_RT/library.json
+++ b/libraries/MCP23017_RT/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/MCP23017_RT.git"
   },
-  "version": "0.6.3",
+  "version": "0.7.0",
   "license": "MIT",
   "frameworks": "*",
   "platforms": "*",
diff --git a/libraries/MCP23017_RT/library.properties b/libraries/MCP23017_RT/library.properties
index 6ade5f5f..f3745bcd 100644
--- a/libraries/MCP23017_RT/library.properties
+++ b/libraries/MCP23017_RT/library.properties
@@ -1,5 +1,5 @@
 name=MCP23017_RT
-version=0.6.3
+version=0.7.0
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino library for I2C MCP23017 16 channel port expander  16 IO-lines