diff --git a/src/host/usbh.c b/src/host/usbh.c
index 15c48be47..c8eb91be3 100644
--- a/src/host/usbh.c
+++ b/src/host/usbh.c
@@ -258,7 +258,7 @@ static bool usbh_control_xfer_cb (uint8_t daddr, uint8_t ep_addr, xfer_result_t
 
 #if CFG_TUSB_OS == OPT_OS_NONE
 // TODO rework time-related function later
-void osal_task_delay(uint32_t msec)
+TU_ATTR_WEAK void osal_task_delay(uint32_t msec)
 {
   const uint32_t start = hcd_frame_number(_usbh_controller);
   while ( ( hcd_frame_number(_usbh_controller) - start ) < msec ) {}
diff --git a/src/osal/osal_none.h b/src/osal/osal_none.h
index 5f407378e..76e77c25d 100644
--- a/src/osal/osal_none.h
+++ b/src/osal/osal_none.h
@@ -37,7 +37,7 @@
 
 #if CFG_TUH_ENABLED
 // currently only needed/available in host mode
-void osal_task_delay(uint32_t msec);
+TU_ATTR_WEAK void osal_task_delay(uint32_t msec);
 #endif
 
 //--------------------------------------------------------------------+