diff --git a/os/hal/platforms/STM32F2xx/hal_lld.h b/os/hal/platforms/STM32F2xx/hal_lld.h
index 736853605..ee260fdbb 100644
--- a/os/hal/platforms/STM32F2xx/hal_lld.h
+++ b/os/hal/platforms/STM32F2xx/hal_lld.h
@@ -144,10 +144,6 @@
  * @name    PWR_CR register bits definitions
  * @{
  */
-#define STM32_VOS_MASK          (1 << 14)   /**< Core voltage mask.         */
-#define STM32_VOS_LOW           (0 << 14)   /**< Core voltage set to low.   */
-#define STM32_VOS_HIGH          (1 << 14)   /**< Core voltage set to high.  */
-
 #define STM32_PLS_MASK          (7 << 5)    /**< PLS bits mask.             */
 #define STM32_PLS_LEV0          (0 << 5)    /**< PVD level 0.               */
 #define STM32_PLS_LEV1          (1 << 5)    /**< PVD level 1.               */