diff --git a/examples/device/nrf52840/src/msc_device_app.c b/examples/device/nrf52840/src/msc_device_app.c
index d4376711..836dd2d4 100644
--- a/examples/device/nrf52840/src/msc_device_app.c
+++ b/examples/device/nrf52840/src/msc_device_app.c
@@ -74,7 +74,7 @@ void msc_app_umount(uint8_t rhport)
 
 }
 
-int32_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
+int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
 {
   // read10 & write10 has their own callback and MUST not be handled here
 
diff --git a/examples/device/nrf52840/src/msc_device_ramdisk.c b/examples/device/nrf52840/src/msc_device_ramdisk.c
index f50b03f1..3d2fca1d 100644
--- a/examples/device/nrf52840/src/msc_device_ramdisk.c
+++ b/examples/device/nrf52840/src/msc_device_ramdisk.c
@@ -91,7 +91,7 @@ uint8_t msc_device_ramdisk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
 //--------------------------------------------------------------------+
 // IMPLEMENTATION
 //--------------------------------------------------------------------+
-int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   uint8_t* addr = msc_device_ramdisk[lba] + offset;
   memcpy(buffer, addr, bufsize);
@@ -99,7 +99,7 @@ int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t o
   return bufsize;
 }
 
-int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   uint8_t* addr = msc_device_ramdisk[lba] + offset;
   memcpy(addr, buffer, bufsize);
diff --git a/examples/obsolete/device/src/msc_device_app.c b/examples/obsolete/device/src/msc_device_app.c
index 7b1fb941..572c90ef 100644
--- a/examples/obsolete/device/src/msc_device_app.c
+++ b/examples/obsolete/device/src/msc_device_app.c
@@ -99,7 +99,7 @@ void msc_app_umount(uint8_t rhport)
 
 }
 
-int32_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
+int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
 {
   // read10 & write10 has their own callback and MUST not be handled here
 
diff --git a/examples/obsolete/device/src/msc_device_ramdisk.c b/examples/obsolete/device/src/msc_device_ramdisk.c
index 7133e745..6dc48e29 100644
--- a/examples/obsolete/device/src/msc_device_ramdisk.c
+++ b/examples/obsolete/device/src/msc_device_ramdisk.c
@@ -91,7 +91,7 @@ uint8_t msc_device_ramdisk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
 //--------------------------------------------------------------------+
 // IMPLEMENTATION
 //--------------------------------------------------------------------+
-int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   (void) rhport; (void) lun;
 
@@ -101,7 +101,7 @@ int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t o
   return bufsize;
 }
 
-int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   (void) rhport; (void) lun;
 
diff --git a/examples/obsolete/device/src/msc_device_romdisk.c b/examples/obsolete/device/src/msc_device_romdisk.c
index 0dd84bdf..1e6ca1bc 100644
--- a/examples/obsolete/device/src/msc_device_romdisk.c
+++ b/examples/obsolete/device/src/msc_device_romdisk.c
@@ -94,7 +94,7 @@ const uint8_t msc_device_app_rommdisk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
 //--------------------------------------------------------------------+
 // IMPLEMENTATION
 //--------------------------------------------------------------------+
-int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   (void) rhport; (void) lun;
 
@@ -106,7 +106,7 @@ int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t o
 
 
 // Stall write10 by return 0, as this is readonly disk
-int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
+int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
 {
   (void) rhport; (void) lun;
 
diff --git a/src/class/msc/msc_device.c b/src/class/msc/msc_device.c
index d9b4c76a..e9202117 100644
--- a/src/class/msc/msc_device.c
+++ b/src/class/msc/msc_device.c
@@ -216,7 +216,7 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
 
         if ( p_cbw->xfer_bytes == 0)
         {
-          int32_t const cb_result = tud_msc_scsi_cb(rhport, p_cbw->lun, p_cbw->command, NULL, 0);
+          int32_t const cb_result = tud_msc_scsi_cb(p_cbw->lun, p_cbw->command, NULL, 0);
 
           p_csw->status   = (cb_result == 0) ? MSC_CSW_STATUS_PASSED : MSC_CSW_STATUS_FAILED;
           p_msc->data_len = 0;
@@ -281,7 +281,7 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
           }
           else
           {
-            cb_result = tud_msc_scsi_cb(rhport, p_cbw->lun, p_cbw->command, _mscd_buf, p_msc->data_len);
+            cb_result = tud_msc_scsi_cb(p_cbw->lun, p_cbw->command, _mscd_buf, p_msc->data_len);
           }
 
           if ( cb_result > 0 )
@@ -317,7 +317,7 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
       {
         if ( SCSI_CMD_WRITE_10 != p_cbw->command[0] )
         {
-          p_csw->status = (tud_msc_scsi_cb(rhport, p_cbw->lun, p_cbw->command, _mscd_buf, p_msc->data_len) >= 0 ) ? MSC_CSW_STATUS_PASSED : MSC_CSW_STATUS_FAILED;
+          p_csw->status = (tud_msc_scsi_cb(p_cbw->lun, p_cbw->command, _mscd_buf, p_msc->data_len) >= 0 ) ? MSC_CSW_STATUS_PASSED : MSC_CSW_STATUS_FAILED;
         }
         else
         {
@@ -327,7 +327,7 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
           uint32_t const lba = rdwr10_get_lba(p_cbw->command) + (p_msc->xferred_len / block_sz);
 
           // Application can consume smaller bytes
-          int32_t nbytes = tud_msc_write10_cb(rhport, p_cbw->lun, lba, p_msc->xferred_len % block_sz, _mscd_buf, xferred_bytes);
+          int32_t nbytes = tud_msc_write10_cb(p_cbw->lun, lba, p_msc->xferred_len % block_sz, _mscd_buf, xferred_bytes);
 
           if ( nbytes < 0 )
           {
@@ -398,15 +398,15 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
     // Invoke complete callback if defined
     if ( SCSI_CMD_READ_10 == p_cbw->command[0])
     {
-      if ( tud_msc_read10_complete_cb ) tud_msc_read10_complete_cb(rhport, p_cbw->lun);
+      if ( tud_msc_read10_complete_cb ) tud_msc_read10_complete_cb(p_cbw->lun);
     }
     else if ( SCSI_CMD_WRITE_10 == p_cbw->command[0] )
     {
-      if ( tud_msc_write10_complete_cb ) tud_msc_write10_complete_cb(rhport, p_cbw->lun);
+      if ( tud_msc_write10_complete_cb ) tud_msc_write10_complete_cb(p_cbw->lun);
     }
     else
     {
-      if ( tud_msc_scsi_complete_cb ) tud_msc_scsi_complete_cb(rhport, p_cbw->lun, p_cbw->command);
+      if ( tud_msc_scsi_complete_cb ) tud_msc_scsi_complete_cb(p_cbw->lun, p_cbw->command);
     }
 
     // Move to default CMD stage after sending status
@@ -438,7 +438,7 @@ static void proc_read10_cmd(uint8_t rhport, mscd_interface_t* p_msc)
   int32_t nbytes = (int32_t) min32_of(sizeof(_mscd_buf), p_cbw->xfer_bytes-p_msc->xferred_len);
 
   // Application can consume smaller bytes
-  nbytes = tud_msc_read10_cb (rhport, p_cbw->lun, lba, p_msc->xferred_len % block_sz, _mscd_buf, (uint32_t) nbytes);
+  nbytes = tud_msc_read10_cb(p_cbw->lun, lba, p_msc->xferred_len % block_sz, _mscd_buf, (uint32_t) nbytes);
 
   if ( nbytes < 0 )
   {
diff --git a/src/class/msc/msc_device.h b/src/class/msc/msc_device.h
index fbfe7ef1..60144cc5 100644
--- a/src/class/msc/msc_device.h
+++ b/src/class/msc/msc_device.h
@@ -102,7 +102,6 @@ bool tud_msc_ready(void);
 // APPLICATION CALLBACK API (WEAK is optional)
 //--------------------------------------------------------------------+
 /** \brief Callback invoked when received \ref SCSI_CMD_READ_10 command
- * \param[in]		\rhport     Root hub port
  * \param[in]		lun         Targeted Logical Unit
  *                          Must be accessible by USB controller (see \ref CFG_TUSB_ATTR_USBRAM)
  * \param[in]		lba         Starting Logical Block Address to be read
@@ -126,10 +125,9 @@ bool tud_msc_ready(void);
  *              \n\n Although this callback is called by tinyusb device task (non-isr context), however as all the classes share
  *              the same task (to save resource), any delay in this callback will cause delay in response on other classes.
  */
-int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize);
+int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize);
 
 /** \brief 			Callback invoked when received \ref SCSI_CMD_WRITE_10 command
- * \param[in]		rhport	    Root hub port
  * \param[in]		lun         Targeted Logical Unit
  *                          Must be accessible by USB controller (see \ref CFG_TUSB_ATTR_USBRAM)
  * \param[in]		lba         Starting Logical Block Address to be write
@@ -152,11 +150,10 @@ int32_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t o
  *              \n\n Although this callback is called by tinyusb device task (non-isr context), however as all the classes share
  *              the same task (to save resource), any delay in this callback will cause delay in response on other classes.
  */
-int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize);
+int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize);
 
 
 /** \brief 			Callback invoked when received an SCSI command other than \ref SCSI_CMD_WRITE_10 and \ref SCSI_CMD_READ_10
- * \param[in]		rhport	    Root hub port
  * \param[in]		lun         Targeted Logical Unit
  * \param[in]		scsi_cmd    SCSI command contents, application should examine this command block to know which command host requested
  * \param[out]  buffer      Buffer for SCSI Data Stage.
@@ -168,12 +165,12 @@ int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t
  *                          endpoint and return failed status in command status wrapper phase.
  * \retval      otherwise   Actual bytes processed, must not be more than \a \b bufsize. Can be zero for no-data command.
  */
-int32_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize);
+int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize);
 
 /*------------- Optional callbacks : Could be used by application to free up resources -------------*/
-ATTR_WEAK void tud_msc_read10_complete_cb(uint8_t rhport, uint8_t lun);
-ATTR_WEAK void tud_msc_write10_complete_cb(uint8_t rhport, uint8_t lun);
-ATTR_WEAK void tud_msc_scsi_complete_cb(uint8_t rhport, uint8_t lun, uint8_t const scsi_cmd[16]);
+ATTR_WEAK void tud_msc_read10_complete_cb(uint8_t lun);
+ATTR_WEAK void tud_msc_write10_complete_cb(uint8_t lun);
+ATTR_WEAK void tud_msc_scsi_complete_cb(uint8_t lun, uint8_t const scsi_cmd[16]);
 
 /** @} */
 /** @} */