diff --git a/Button.cpp b/Button.cpp
index f6174c1..d4a11ea 100755
--- a/Button.cpp
+++ b/Button.cpp
@@ -29,7 +29,7 @@
 || @parameter buttonMode indicates BUTTON_PULLUP or BUTTON_PULLDOWN resistor
 */
 Button::Button(uint8_t buttonPin, uint8_t buttonMode){
-	pin=buttonPin;
+  pin=buttonPin;
   pinMode(pin,INPUT);
   
 	buttonMode==BUTTON_PULLDOWN ? pulldown() : pullup(buttonMode);
@@ -56,7 +56,7 @@ void Button::pullup(uint8_t buttonMode)
 	mode=BUTTON_PULLUP;
   if (buttonMode == BUTTON_PULLUP_INTERNAL) 
   {
-	  digitalWrite(pin,HIGH);
+	  pinMode(pin,INPUT_PULLUP);
   }
 }
 
@@ -78,7 +78,8 @@ void Button::pulldown(void)
 || @return true if button is pressed
 */
 bool Button::isPressed(void)
-{  
+{
+  
   //save the previous value
   bitWrite(state,PREVIOUS,bitRead(state,CURRENT));
   
@@ -282,4 +283,4 @@ unsigned int Button::holdTime() const { if (pressedStartTime!=-1) { return milli
 bool Button::operator==(Button &rhs) 
 {
   return (this==&rhs);
-}
\ No newline at end of file
+}
diff --git a/Button.h b/Button.h
index c1528d9..6cb2497 100755
--- a/Button.h
+++ b/Button.h
@@ -6,7 +6,7 @@
 ||
 || @description
 || | This is a Hardware Abstraction Library for Buttons
-|| | It providea an easy way of handling buttons
+|| | It provides an easy way of handling buttons
 || #
 ||
 || @license LICENSE_REPLACE
@@ -56,7 +56,7 @@ class Button {
     uint8_t pin;
     uint8_t mode;
     uint8_t state;
-    unsigned int pressedStartTime;
+    unsigned long pressedStartTime;
     unsigned int holdEventThreshold;
     buttonEventHandler cb_onPress;
     buttonEventHandler cb_onRelease;
@@ -66,4 +66,4 @@ class Button {
     bool triggeredHoldEvent;
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/Examples/Button/Button.ino b/Examples/Button/Button.ino
index faf3c25..33f48ca 100644
--- a/Examples/Button/Button.ino
+++ b/Examples/Button/Button.ino
@@ -24,7 +24,7 @@
 || Wiring:
 || GND -----/ ------ pin 12
 */
-Button button = Button(12,PULLUP);
+Button button = Button(12,BUTTON_PULLUP);
 
 void setup(){
   pinMode(13,OUTPUT); //debug to led 13