diff --git a/src/portable/st/stm32f3/dcd_stm32f3.c b/src/portable/st/stm32f3/dcd_stm32f3.c
deleted file mode 100644
index 7339863b..00000000
--- a/src/portable/st/stm32f3/dcd_stm32f3.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/* 
- * The MIT License (MIT)
- *
- * Copyright (c) 2019 Ha Thach (tinyusb.org)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * This file is part of the TinyUSB stack.
- */
-
-#include "tusb_option.h"
-
-#if TUSB_OPT_DEVICE_ENABLED && CFG_TUSB_MCU == OPT_MCU_STM32F3
-
-#include "device/dcd.h"
-#include "stm32f3xx.h"
-
-//--------------------------------------------------------------------+
-// MACRO TYPEDEF CONSTANT ENUM DECLARATION
-//--------------------------------------------------------------------+
-
-void dcd_init (uint8_t rhport)
-{
-}
-
-// Enable device interrupt
-void dcd_int_enable (uint8_t rhport)
-{}
-
-// Disable device interrupt
-void dcd_int_disable(uint8_t rhport)
-{}
-
-// Receive Set Address request, mcu port must also include status IN response
-void dcd_set_address(uint8_t rhport, uint8_t dev_addr)
-{}
-
-// Receive Set Config request
-void dcd_set_config (uint8_t rhport, uint8_t config_num)
-{}
-
-void dcd_remote_wakeup(uint8_t rhport)
-{
-  (void) rhport;
-}
-
-//--------------------------------------------------------------------+
-// Endpoint API
-//--------------------------------------------------------------------+
-bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc)
-{
-  return false;
-}
-
-bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes)
-{
-  return false;
-}
-
-void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
-{
-}
-
-void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
-{
-}
-
-#endif
-
diff --git a/src/tusb_option.h b/src/tusb_option.h
index fbd48a8f..e72c9540 100644
--- a/src/tusb_option.h
+++ b/src/tusb_option.h
@@ -52,7 +52,7 @@
 #define OPT_MCU_SAMD51        201 ///< MicroChip SAMD51
 
 #define OPT_MCU_STM32F4       300 ///< ST STM32F4
-#define OPT_MCU_STM32F3       301 ///< ST STM32F3
+#define OPT_MCU_STM32_FSDEV   301 ///< ST STM32F3
 #define OPT_MCU_STM32H7       302 ///< ST STM32H7
 
 /** @} */