diff --git a/tests/gadget-zero/main-stm32f103-generic.c b/tests/gadget-zero/main-stm32f103-generic.c
index 27148806..5e701dea 100644
--- a/tests/gadget-zero/main-stm32f103-generic.c
+++ b/tests/gadget-zero/main-stm32f103-generic.c
@@ -50,7 +50,7 @@ int main(void)
 	 */
 	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
 		GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
-	gpio_clear(GPIOA, GPIO11);
+	gpio_clear(GPIOA, GPIO12);
 	for (unsigned int i = 0; i < 800000; i++) {
 		__asm__("nop");
 	}