1 files changed, 2 insertions, 2 deletions
diff --git a/src/utmps/utmps_rewind.c b/src/utmps/utmps_rewind.c
index fe3c8ed..5c16cd6 100644
--- a/src/utmps/utmps_rewind.c
+++ b/src/utmps/utmps_rewind.c
@@ -9,9 +9,9 @@
 int utmps_rewind (utmps *a, tain const *deadline, tain *stamp)
 {
   ssize_t r ;
-  char c ;
+  unsigned char c ;
   if (!ipc_timed_send(a->fd, "r", 1, deadline, stamp)) return 0 ;
-  r = ipc_timed_recv(a->fd, &c, 1, 0, deadline, stamp) ;
+  r = ipc_timed_recv(a->fd, (char *)&c, 1, 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
   if (c) return (errno = c, 0) ;