diff --git a/sw/blinky.S b/sw/blinky.S
index 80bc620..50a94dd 100644
--- a/sw/blinky.S
+++ b/sw/blinky.S
@@ -29,6 +29,8 @@ _start:
 	/* Set timer value to control blink speed */
 	li t1, DELAY
 
+	/* Clear t0 */
+	addi	t0, zero, 0
 bl1:
 	/* Write to LEDs */
 	sb t0, 0(a0)
diff --git a/sw/blinky.hex b/sw/blinky.hex
index b9847be..cabe9e9 100644
--- a/sw/blinky.hex
+++ b/sw/blinky.hex
@@ -1,6 +1,7 @@
 40000537
 00050513
 00100337
+00000293
 00550023
 0012c293
 000073b3
@@ -2045,4 +2046,3 @@ fedff06f
 0
 0
 0
-0