diff --git a/hw/bsp/samd11/family.mk b/hw/bsp/samd11/family.mk
index c41a0dd37..6f89a2d66 100644
--- a/hw/bsp/samd11/family.mk
+++ b/hw/bsp/samd11/family.mk
@@ -8,6 +8,7 @@ CFLAGS += \
   -DOSC32K_OVERWRITE_CALIBRATION=0 \
   -DCFG_EXAMPLE_MSC_READONLY \
   -DCFG_EXAMPLE_VIDEO_READONLY \
+  -DCFG_EXAMPLE_MTP_READONLY \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD11
 
 # suppress warning caused by vendor mcu driver