diff --git a/src/osal/osal_none.h b/src/osal/osal_none.h
index 1d170d2f..11726c95 100644
--- a/src/osal/osal_none.h
+++ b/src/osal/osal_none.h
@@ -140,7 +140,7 @@ typedef osal_queue_def_t* osal_queue_t;
       .item_size    = sizeof(_type),                \
       .overwritable = false,                        \
       .max_pointer_idx = (2*(_depth))-1,            \
-      .non_used_index_space = 0xFFFF-((2*(_depth))-1),\
+      .non_used_index_space   = UINT16_MAX - (2*_depth-1),\
     }\
   }