diff --git a/os/hal/ports/SN32/LLD/SN32F2xx/CT/hal_pwm_lld.h b/os/hal/ports/SN32/LLD/SN32F2xx/CT/hal_pwm_lld.h
index 61162df63c..7c6ea68958 100644
--- a/os/hal/ports/SN32/LLD/SN32F2xx/CT/hal_pwm_lld.h
+++ b/os/hal/ports/SN32/LLD/SN32F2xx/CT/hal_pwm_lld.h
@@ -61,7 +61,7 @@
  * @brief   PWMD1 interrupt priority level setting.
  */
 #if !defined(SN32_PWM_CT16B1_IRQ_PRIORITY) || defined(__DOXYGEN__)
-#define SN32_PWM_CT16B1_IRQ_PRIORITY         3
+#define SN32_PWM_CT16B1_IRQ_PRIORITY         2
 #endif
 /** @} */
 
diff --git a/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c b/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c
index d54684aa49..863a7f1ea9 100644
--- a/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c
+++ b/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.c
@@ -653,7 +653,7 @@ void usb_lld_start(USBDriver *usbp) {
         #if PLATFORM_USB_USE_USB1 == TRUE
         if (&USBD1 == usbp) {
             USB_Init();
-            nvicEnableVector(SN32_USB_NUMBER, 14);
+            nvicEnableVector(SN32_USB_NUMBER, SN32_USB_IRQ_PRIORITY);
         }
         #endif
     }
diff --git a/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h b/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h
index 5f0a230b9b..46437cd600 100644
--- a/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h
+++ b/os/hal/ports/SN32/LLD/SN32F2xx/USB/hal_usb_lld.h
@@ -65,6 +65,13 @@
 #if !defined(PLATFORM_USB_USE_USB1) || defined(__DOXYGEN__)
 #define PLATFORM_USB_USE_USB1                  TRUE
 #endif
+
+/**
+ * @brief   USB interrupt priority level setting.
+ */
+#if !defined(SN32_USB_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define SN32_USB_IRQ_PRIORITY                3
+#endif
 /** @} */
 
 /*===========================================================================*/