diff --git a/src/device/usbd.c b/src/device/usbd.c
index 8b126a9f6..8a3d8ec2f 100644
--- a/src/device/usbd.c
+++ b/src/device/usbd.c
@@ -1250,7 +1250,7 @@ bool usbd_edpt_iso_xfer(uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_
   uint8_t const epnum = tu_edpt_number(ep_addr);
   uint8_t const dir   = tu_edpt_dir(ep_addr);
 
-  TU_LOG2("  Queue ISO EP %02X with %u bytes ... ", ep_addr, count);
+  TU_LOG2("  Queue ISO EP %02X with %u bytes ... ", ep_addr, total_bytes);
 
   // Attempt to transfer on a busy endpoint, sound like an race condition !
   TU_ASSERT(_usbd_dev.ep_status[epnum][dir].busy == 0);