diff --git a/examples/stm32/f4/stm32f4-discovery/tick_blink/tick_blink.c b/examples/stm32/f4/stm32f4-discovery/tick_blink/tick_blink.c
index 1d92f4e..568a74e 100644
--- a/examples/stm32/f4/stm32f4-discovery/tick_blink/tick_blink.c
+++ b/examples/stm32/f4/stm32f4-discovery/tick_blink/tick_blink.c
@@ -50,7 +50,7 @@ static void systick_setup(void)
 {
 	/* clock rate / 1000 to get 1mS interrupt rate */
 	systick_set_reload(168000);
-	systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB);
+	systick_set_clocksource(STK_CSR_CLKSOURCE_AHB);
 	systick_counter_enable();
 	/* this done last */
 	systick_interrupt_enable();