diff --git a/Main.c b/Main.c
index 0222980..b79d7db 100644
--- a/Main.c
+++ b/Main.c
@@ -40,6 +40,7 @@ int main(int argc, char *argv[])
     pinMode(RED_PIN, OUTPUT);
 
     pinMode(BUTTON_PIN, INPUT);
+    pullUpDnControl(BUTTON_PIN, PUD_UP);
 
     enum LED_STATE ledState = BLANK;