diff --git a/configs/stm32f746-ws/include/board.h b/configs/stm32f746-ws/include/board.h
index 8cbd85bc92c..65a27fc6b7b 100644
--- a/configs/stm32f746-ws/include/board.h
+++ b/configs/stm32f746-ws/include/board.h
@@ -124,7 +124,7 @@
 
 /* Configure factors for  PLLSAI clock */
 
-
+#define CONFIG_STM32F7_PLLSAI 1
 #define STM32_RCC_PLLSAICFGR_PLLSAIN    RCC_PLLSAICFGR_PLLSAIN(192)
 #define STM32_RCC_PLLSAICFGR_PLLSAIP    RCC_PLLSAICFGR_PLLSAIP(2)
 #define STM32_RCC_PLLSAICFGR_PLLSAIQ    RCC_PLLSAICFGR_PLLSAIQ(2)