diff --git a/Firmata.cpp b/Firmata.cpp
index ee01f8f5..db3d1695 100644
--- a/Firmata.cpp
+++ b/Firmata.cpp
@@ -541,10 +541,9 @@ void FirmataClass::setPinState(byte pin, int state)
  * @param onInterval The number of milliseconds for the LED to be ON during each interval.
  * @param offInterval The number of milliseconds for the LED to be OFF during each interval.
  */
-void FirmataClass::strobeBlinkPin(byte pin, int count, int onInterval, int offInterval)
+void FirmataClass::strobeBlinkPin(byte pin, unsigned int count, uint32_t onInterval, uint32_t offInterval)
 {
-  byte i;
-  for (i = 0; i < count; i++) {
+  for (unsigned int i = 0; i < count; ++i) {
     delay(offInterval);
     digitalWrite(pin, HIGH);
     delay(onInterval);
diff --git a/Firmata.h b/Firmata.h
index fb993d79..e4eeddf0 100644
--- a/Firmata.h
+++ b/Firmata.h
@@ -127,7 +127,7 @@ class FirmataClass
     boolean blinkVersionDisabled;
 
     /* private methods ------------------------------ */
-    void strobeBlinkPin(byte pin, int count, int onInterval, int offInterval);
+    void strobeBlinkPin(byte pin, unsigned int count, uint32_t onInterval, uint32_t offInterval);
     friend void FirmataMarshaller::encodeByteStream (size_t bytec, uint8_t * bytev, size_t max_bytes) const;
 
     /* callback functions */