diff --git a/arch/arm/src/stm32/stm32_flash.c b/arch/arm/src/stm32/stm32_flash.c
index 8ba48a82623..f955085a27b 100644
--- a/arch/arm/src/stm32/stm32_flash.c
+++ b/arch/arm/src/stm32/stm32_flash.c
@@ -127,6 +127,7 @@ static void flash_lock(void)
 {
   modifyreg32(STM32_FLASH_CR, 0, FLASH_CR_LOCK);
 }
+#if defined(CONFIG_STM32_FLASH_WORKAROUND_DATA_CACHE_CORRUPTION_ON_RWW)
 
 static void data_cache_disable(void)
 {
@@ -144,6 +145,7 @@ static void data_cache_enable(void)
   modifyreg32(STM32_FLASH_ACR, 0, FLASH_ACR_DCEN);
 }
 
+#endif
 /************************************************************************************
  * Public Functions
  ************************************************************************************/