diff --git a/src/device/usbd.h b/src/device/usbd.h
index dc5b35ff..118e53ce 100644
--- a/src/device/usbd.h
+++ b/src/device/usbd.h
@@ -603,7 +603,7 @@ TU_ATTR_WEAK bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb
 /* optional interrupt endpoint */ \
 // _int_pollingInterval : for LS/FS, expressed in frames (1ms each). 16 may be a good number?
 #define TUD_USBTMC_INT_DESCRIPTOR(_ep_interrupt, _ep_interrupt_size, _int_pollingInterval ) \
-  7, TUSB_DESC_ENDPOINT, _ep_interrupt, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_ep_interrupt_size), 0x16
+  7, TUSB_DESC_ENDPOINT, _ep_interrupt, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_ep_interrupt_size), _int_pollingInterval
 
 #define TUD_USBTMC_INT_DESCRIPTOR_LEN (7u)