1 files changed, 3 insertions, 0 deletions
diff --git a/src/H5.c b/src/H5.c
index 4a60858..e927910 100644
--- a/src/H5.c
+++ b/src/H5.c
@@ -951,6 +951,9 @@ H5is_library_threadsafe(hbool_t *is_ts)
  *    NOTE:     The main purpose of this is for handling Win32 thread cleanup
  *              on thread/process detach.
  *
+ *              Only enabled when the shared Windows library is built with
+ *              thread safety enabled.
+ *
  * Return:      TRUE on success, FALSE on failure
  *
  *-------------------------------------------------------------------------