diff --git a/doc/CHANGELOG.md b/doc/CHANGELOG.md
index 76ab0d5..d9b885d 100644
--- a/doc/CHANGELOG.md
+++ b/doc/CHANGELOG.md
@@ -6,6 +6,11 @@ This project adheres to [Semantic Versioning 2.0.0](http://semver.org/).
 keybrd version 0.x.x is for initial development.
 keybrd version 1.0.0 will be released when the public API is stable.
 
+0.6.3 (2016-10-06)
+------------------
+* Enhancements
+  * add comma to Scanner_IOE constructor
+
 0.6.1 (2016-10-02)
 ------------------
 * Enhancements
diff --git a/library.properties b/library.properties
index b87c0dc..fce9879 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=keybrd
-version=0.6.1
+version=0.6.3
 author=Wolfram Volpi
 maintainer=Wolfram Volpi
 sentence=A library for creating custom-keyboard firmware.
diff --git a/src/Scanner_IOE.h b/src/Scanner_IOE.h
index 21c871f..710bda0 100644
--- a/src/Scanner_IOE.h
+++ b/src/Scanner_IOE.h
@@ -1,5 +1,5 @@
-#ifndef SCANNER_PORT_H
-#define SCANNER_PORT_H
+#ifndef SCANNER_IOE_H
+#define SCANNER_IOE_H
 
 #include <Arduino.h>
 #include <inttypes.h>
@@ -16,12 +16,12 @@ keybrd_library_developer_guide.md has instructions for ## Active state and diode
 class Scanner_IOE : public ScannerInterface
 {
     private:
-        const bool activeState;                    //logic level of strobe on, HIGH or LOW
+        const bool activeState;                 //logic level of strobe on, HIGH or LOW
         PortInterface& refPortWrite;            //the IC port containing the strobePin
         PortInterface& refPortRead;             //the IC's read port
     public:
         Scanner_IOE(const bool activeState, PortInterface &refPortWrite, PortInterface& refPortRead)
-            : activeState(activeState) refPortWrite(refPortWrite), refPortRead(refPortRead) {}
+            : activeState(activeState), refPortWrite(refPortWrite), refPortRead(refPortRead) {}
         void init(const uint8_t strobePin);
         void begin();
         read_pins_t scan(const uint8_t strobePin);