diff --git a/ATtiny84_LED_PC.c b/ATtiny84_LED_PC.c
index 281d8a2..8d0965c 100644
--- a/ATtiny84_LED_PC.c
+++ b/ATtiny84_LED_PC.c
@@ -668,7 +668,7 @@ void off(uint8_t count, uint8_t* idx, uint8_t colour, uint8_t led)
 		pgm_read_byte(&gamma8[0x00])
 	};
 
-	for (i = 0; i < count; ++i)
+	for (int i = 0; i < count; ++i)
 	{
 		send_pixel(black[0], black[1], black[2], led);
 	}
diff --git a/Makefile b/Makefile
index 52df96c..f23fab1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,9 @@
-controller: ATtiny84_LED_PC.c i2c_master.c
+all:
+	make build
+	make program
+
+build:
 	avr-gcc ATtiny84_LED_PC.c i2c_master.c -o controller -DF_CPU=16000000 -mmcu=attiny84
+
+program:
+	avrdude -p attiny84 -c usbtiny -U flash:w:controller