diff -up tcsh-6.17.00/tc.prompt.c.orig tcsh-6.17.00/tc.prompt.c
--- tcsh-6.17.00/tc.prompt.c.orig	2010-06-17 12:40:40.422571577 +0200
+++ tcsh-6.17.00/tc.prompt.c	2010-06-17 12:41:28.628519727 +0200
@@ -526,6 +526,9 @@ tprintf(int what, const Char *fmt, const
 		    int njobs = -1;
 		    struct process *pp;
 
+		    if (!proclist.p_next)
+		        njobs++;
+
 		    for (pp = proclist.p_next; pp; pp = pp->p_next)
 			njobs++;
 		    p = Itoa(njobs, 1, attributes);