diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index f95fa5d..a5a3462 100644
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -281,11 +281,6 @@ HardwareSerial::HardwareSerial(
 
 // Public Methods //////////////////////////////////////////////////////////////
 
-void HardwareSerial::begin(unsigned long baud)
-{
-  begin(baud, SERIAL_8N1);
-}
-
 void HardwareSerial::begin(unsigned long baud, byte config)
 {
   uint16_t baud_setting;
@@ -402,10 +397,6 @@ size_t HardwareSerial::write(uint8_t c)
   return 1;
 }
 
-HardwareSerial::operator bool() {
-	return true;
-}
-
 // Preinstantiate Objects //////////////////////////////////////////////////////
 
 #if defined(UBRRH) && defined(UBRRL)
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index 0f62262..6dba734 100644
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -37,6 +37,32 @@
   #define SERIAL_BUFFER_SIZE 64
 #endif
 
+// Define config for Serial.begin(baud, config);
+#define SERIAL_5N1 0x00
+#define SERIAL_6N1 0x02
+#define SERIAL_7N1 0x04
+#define SERIAL_8N1 0x06
+#define SERIAL_5N2 0x08
+#define SERIAL_6N2 0x0A
+#define SERIAL_7N2 0x0C
+#define SERIAL_8N2 0x0E
+#define SERIAL_5E1 0x20
+#define SERIAL_6E1 0x22
+#define SERIAL_7E1 0x24
+#define SERIAL_8E1 0x26
+#define SERIAL_5E2 0x28
+#define SERIAL_6E2 0x2A
+#define SERIAL_7E2 0x2C
+#define SERIAL_8E2 0x2E
+#define SERIAL_5O1 0x30
+#define SERIAL_6O1 0x32
+#define SERIAL_7O1 0x34
+#define SERIAL_8O1 0x36
+#define SERIAL_5O2 0x38
+#define SERIAL_6O2 0x3A
+#define SERIAL_7O2 0x3C
+#define SERIAL_8O2 0x3E
+
 class HardwareSerial : public Stream
 {
   protected:
@@ -70,7 +96,7 @@ class HardwareSerial : public Stream
       volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
       volatile uint8_t *ucsrc, volatile uint8_t *udr,
       uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x);
-    void begin(unsigned long);
+    void begin(unsigned long baud) { begin(baud, SERIAL_8N1); }
     void begin(unsigned long, uint8_t);
     void end();
     virtual int available(void);
@@ -83,35 +109,9 @@ class HardwareSerial : public Stream
     inline size_t write(unsigned int n) { return write((uint8_t)n); }
     inline size_t write(int n) { return write((uint8_t)n); }
     using Print::write; // pull in write(str) and write(buf, size) from Print
-    operator bool();
+    operator bool() { return true; }
 };
 
-// Define config for Serial.begin(baud, config);
-#define SERIAL_5N1 0x00
-#define SERIAL_6N1 0x02
-#define SERIAL_7N1 0x04
-#define SERIAL_8N1 0x06
-#define SERIAL_5N2 0x08
-#define SERIAL_6N2 0x0A
-#define SERIAL_7N2 0x0C
-#define SERIAL_8N2 0x0E
-#define SERIAL_5E1 0x20
-#define SERIAL_6E1 0x22
-#define SERIAL_7E1 0x24
-#define SERIAL_8E1 0x26
-#define SERIAL_5E2 0x28
-#define SERIAL_6E2 0x2A
-#define SERIAL_7E2 0x2C
-#define SERIAL_8E2 0x2E
-#define SERIAL_5O1 0x30
-#define SERIAL_6O1 0x32
-#define SERIAL_7O1 0x34
-#define SERIAL_8O1 0x36
-#define SERIAL_5O2 0x38
-#define SERIAL_6O2 0x3A
-#define SERIAL_7O2 0x3C
-#define SERIAL_8O2 0x3E
-
 #if defined(UBRRH) || defined(UBRR0H)
   extern HardwareSerial Serial;
 #elif defined(USBCON)