1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5SM.c b/src/H5SM.c
index 62efb50..abdb109 100644
--- a/src/H5SM.c
+++ b/src/H5SM.c
@@ -2240,7 +2240,7 @@ done:
  */
 static herr_t
 H5SM_read_iter_op(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned sequence,
-    unsigned UNUSED *oh_modified, void *_udata/*in,out*/)
+    unsigned H5_ATTR_UNUSED *oh_modified, void *_udata/*in,out*/)
 {
     H5SM_read_udata_t *udata = (H5SM_read_udata_t *) _udata;
     herr_t ret_value = H5_ITER_CONT;