diff --git a/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino b/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
index d97a9e3c..b06962cc 100644
--- a/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
+++ b/libraries/Wire/examples/SFRRanger_reader/SFRRanger_reader.ino
@@ -14,8 +14,9 @@
 
 void setup()
 {
-  Wire.begin();                // join i2c bus (address optional for master)
-  Serial.begin(9600);          // start serial communication at 9600bps
+  Wire.begin();        // join i2c bus (address optional for master)
+  Serial.begin(9600);  // start serial communication at 9600bps
+  while(!Serial) ;    // wait for serial port to connect.
 }
 
 int reading = 0;
diff --git a/libraries/Wire/examples/bus_scan/bus_scan.ino b/libraries/Wire/examples/bus_scan/bus_scan.ino
index e816ea79..e0b17136 100644
--- a/libraries/Wire/examples/bus_scan/bus_scan.ino
+++ b/libraries/Wire/examples/bus_scan/bus_scan.ino
@@ -41,8 +41,8 @@ void setup()
   // join i2c bus (address optional for master)
   Wire.begin();
 
-  Serial.begin(115200);
-  while(!Serial);
+  Serial.begin(115200); // initialize Serial communication
+  while(!Serial) ;      // wait for serial port to connect.
 }
 
 boolean toggle = false;          // state of the LED
diff --git a/libraries/Wire/examples/master_reader/master_reader.ino b/libraries/Wire/examples/master_reader/master_reader.ino
index b6748b18..b021ba5a 100644
--- a/libraries/Wire/examples/master_reader/master_reader.ino
+++ b/libraries/Wire/examples/master_reader/master_reader.ino
@@ -15,7 +15,8 @@
 void setup()
 {
   Wire.begin();        // join i2c bus (address optional for master)
-  Serial.begin(9600);  // start serial for output
+  Serial.begin(9600);  // initialize Serial communication
+  while(!Serial) ;     // wait for serial port to connect.
 }
 
 void loop()
diff --git a/libraries/Wire/examples/master_writer/master_writer.ino b/libraries/Wire/examples/master_writer/master_writer.ino
index 5304fd81..1a0c9d73 100644
--- a/libraries/Wire/examples/master_writer/master_writer.ino
+++ b/libraries/Wire/examples/master_writer/master_writer.ino
@@ -14,8 +14,9 @@
 
 void setup()
 {
-  Wire.begin(); // join i2c bus (address optional for master)
-  Serial.begin(9600);
+  Wire.begin();       // join i2c bus (address optional for master)
+  Serial.begin(9600); // initialize Serial communication
+  while(!Serial) ;    // wait for serial port to connect.
 }
 
 byte x = 1;