1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5SM.c b/src/H5SM.c
index 5f055bb..b09cb45 100644
--- a/src/H5SM.c
+++ b/src/H5SM.c
@@ -1079,7 +1079,7 @@ H5SM_try_share(H5F_t *f, H5O_t *open_oh, unsigned defer_flags, unsigned type_id,
     ssize_t               index_num;
     htri_t                tri_ret;
 #ifndef NDEBUG
-    unsigned deferred_type = -1u;
+    unsigned deferred_type = -1U;
 #endif
     htri_t ret_value = TRUE;