diff --git a/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.c b/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.c
index d9e9c7d04..64f97265b 100644
--- a/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.c
+++ b/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.c
@@ -89,7 +89,7 @@ void st_lld_init(void) {
                   SysTick_CTRL_TICKINT_Msk;
 
   /* IRQ enabled.*/
-  NVIC_SetPriority(SysTick_IRQn, STM32_ST_IRQ_PRIORITY);
+  nvicSetSystemHandlerPriority(HANDLER_SYSTICK, ADUCM_ST_IRQ_PRIORITY);
 #endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
 }
 
diff --git a/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.h b/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.h
index bf30df1c2..857588a95 100644
--- a/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.h
+++ b/os/hal/ports/ADUCM/ADUCM36x/hal_st_lld.h
@@ -44,8 +44,8 @@
 /**
  * @brief   SysTick timer IRQ priority.
  */
-#if !defined(STM32_ST_IRQ_PRIORITY) || defined(__DOXYGEN__)
-#define STM32_ST_IRQ_PRIORITY               8
+#if !defined(ADUCM_ST_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define ADUCM_ST_IRQ_PRIORITY               7
 #endif
 
 /**
@@ -54,8 +54,8 @@
  *          is required.
  * @note    Timers 0, 1, 2 are supported.
  */
-#if !defined(STM32_ST_USE_TIMER) || defined(__DOXYGEN__)
-#define STM32_ST_USE_TIMER                  2
+#if !defined(ADUCM_ST_USE_TIMER) || defined(__DOXYGEN__)
+#define ADUCM_ST_USE_TIMER                  0
 #endif
 /** @} */