diff --git a/src/Bounce2.h b/src/Bounce2.h
index 7dea71e..1a4d7ee 100644
--- a/src/Bounce2.h
+++ b/src/Bounce2.h
@@ -74,6 +74,7 @@ private:
   inline void unsetStateFlag(const uint8_t flag)     {state &= ~flag;}
   inline void toggleStateFlag(const uint8_t flag)    {state ^= flag;}
   inline bool getStateFlag(const uint8_t flag) const {return((state & flag) != 0);}
+  inline bool thresholdPassed();
 
 public:
 	/*!
diff --git a/src/Debounce.cpp b/src/Debounce.cpp
index c82af69..7da28bd 100644
--- a/src/Debounce.cpp
+++ b/src/Debounce.cpp
@@ -43,7 +43,7 @@ bool Debouncer::update(){
 
     // Ignore everything if we are locked out
 
-    if(millis() - previous_millis >= interval_millis){
+    if(thresholdPassed()){
 
         bool currentState = readCurrentState();
       
@@ -85,7 +85,7 @@ bool Debouncer::update(){
          *  - DEBOUNCED_STATE
          */
 
-        if(millis() - previous_millis >= interval_millis)
+        if(thresholdPassed())
             changeState();
     }
 
@@ -136,7 +136,7 @@ bool Debouncer::update(){
         previous_millis = millis();
         toggleStateFlag(UNSTABLE_STATE);
     } else
-    if(millis() - previous_millis >= interval_millis){
+    if(thresholdPassed()){
 
         /*
          *  We have passed the threshold time
@@ -202,3 +202,8 @@ bool Debouncer::fell() const {
     return ! getStateFlag(DEBOUNCED_STATE) 
         &&   getStateFlag(CHANGED_STATE);
 }
+
+
+inline bool Debouncer::thresholdPassed(){
+    return millis() - previous_millis >= interval_millis;
+}
\ No newline at end of file