diff --git a/configs/mikroe-stm32f4/src/up_clockconfig.c b/configs/mikroe-stm32f4/src/up_clockconfig.c
index 9618cf8dd5..3c55bd9501 100644
--- a/configs/mikroe-stm32f4/src/up_clockconfig.c
+++ b/configs/mikroe-stm32f4/src/up_clockconfig.c
@@ -128,7 +128,7 @@ void stm32_board_clockconfig(void)
 
   /* Enable FLASH prefetch, instruction cache, data cache, and 5 wait states */
 
-#ifdef STM32_FLASH_PREFETCH
+#ifdef CONFIG_STM32_FLASH_PREFETCH
   regval = (FLASH_ACR_LATENCY_5 | FLASH_ACR_ICEN | FLASH_ACR_DCEN | FLASH_ACR_PRFTEN);
 #else
   regval = (FLASH_ACR_LATENCY_5 | FLASH_ACR_ICEN | FLASH_ACR_DCEN);