diff --git a/C/iopreds.c b/C/iopreds.c
index 2c41aa1d3..3ae4dfd98 100644
--- a/C/iopreds.c
+++ b/C/iopreds.c
@@ -2277,6 +2277,7 @@ p_check_if_stream (void)
 static Term
 StreamName(int i)
 {
+  if (i < 3) return(MkAtomTerm(AtomUser));
 #if USE_SOCKET
   if (Stream[i].status & Socket_Stream_f)
     return(MkAtomTerm(LookupAtom("socket")));