1 files changed, 1 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index b029343a848..6c9af7b71fa 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1314,7 +1314,7 @@ emacs_blocked_malloc (size_t size, const void *ptr)
       {
         fprintf (stderr, "Malloc returned %p which is already in use\n",
                  value);
-        fprintf (stderr, "Region in use is %p...%p, %u bytes, type %d\n",
+        fprintf (stderr, "Region in use is %p...%p, %td bytes, type %d\n",
                  m->start, m->end, (char *) m->end - (char *) m->start,
                  m->type);
         abort ();