diff --git a/src/main.cpp b/src/main.cpp
index b660157..9cdfcb6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,7 +4,7 @@
 
 #define BLINKRATE 500
 
-long lastBlink = 0;
+unsigned long lastBlink = 0;
 
 void setup() {
     pinMode(LED, OUTPUT);
@@ -13,5 +13,6 @@ void setup() {
 void loop() {
     if ((millis() - lastBlink) > BLINKRATE) {
         digitalWrite(LED, !digitalRead(LED));
+        lastBlink= millis();
     }
 }
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