diff --git a/tests/tmr.c b/tests/tmr.c
index d48a6d4f0..1a6ac7056 100644
--- a/tests/tmr.c
+++ b/tests/tmr.c
@@ -40,7 +40,7 @@ void main(void) {
 		*TMR0_SCTRL = 0; /*clear bit 15, and all the others --- should be ok, but clearly not "the right thing to do" */
 
 		/* blink off */
-		gpio_data_set(0);
+		gpio_data_reset(LED);
 
 		while((*TMR0_SCTRL >> 15) == 0) { continue; }
 		*TMR0_SCTRL = 0; /*clear bit 15, and all the others --- should be ok, but clearly not "the right thing to do" */