diff --git a/src/class/msc/msc_device.c b/src/class/msc/msc_device.c
index 04a3178a..ace91b40 100644
--- a/src/class/msc/msc_device.c
+++ b/src/class/msc/msc_device.c
@@ -102,11 +102,6 @@ static inline uint16_t rdwr10_get_blockcount(uint8_t const command[])
 //--------------------------------------------------------------------+
 // APPLICATION API
 //--------------------------------------------------------------------+
-bool tud_msc_ready(void)
-{
-  return ( _mscd_itf.ep_in != 0 ) && ( _mscd_itf.ep_out != 0 ) ;
-}
-
 bool tud_msc_set_sense(uint8_t lun, uint8_t sense_key, uint8_t add_sense_code, uint8_t add_sense_qualifier)
 {
   (void) lun;
diff --git a/src/class/msc/msc_device.h b/src/class/msc/msc_device.h
index e030951b..74be7e06 100644
--- a/src/class/msc/msc_device.h
+++ b/src/class/msc/msc_device.h
@@ -68,9 +68,6 @@ TU_VERIFY_STATIC(CFG_TUD_MSC_BUFSIZE < UINT16_MAX, "Size is not correct");
  * \defgroup MSC_Device Device
  *  @{ */
 
-
-// Check if MSC interface is ready to use
-bool tud_msc_ready(void);
 bool tud_msc_set_sense(uint8_t lun, uint8_t sense_key, uint8_t add_sense_code, uint8_t add_sense_qualifier);
 
 //--------------------------------------------------------------------+