diff --git a/tinyusb/osal/osal_common.h b/tinyusb/osal/osal_common.h
index b97e68af4..8a6853ca8 100644
--- a/tinyusb/osal/osal_common.h
+++ b/tinyusb/osal/osal_common.h
@@ -61,7 +61,7 @@
 enum
 {
   OSAL_TIMEOUT_NOTIMEOUT    = 0,  // for use within ISR,  return immediately
-  OSAL_TIMEOUT_NORMAL       = 10, // default is 10 msec
+  OSAL_TIMEOUT_NORMAL       = 10*5, // default is 10 msec, FIXME CMSIS-RTX easily timeout with 10 msec
   OSAL_TIMEOUT_WAIT_FOREVER = 0x0EEEEEEE
 };