diff --git a/lang/cem/libcc.ansi/stdio/doprnt.c b/lang/cem/libcc.ansi/stdio/doprnt.c
index b520dcfbf..309505958 100644
--- a/lang/cem/libcc.ansi/stdio/doprnt.c
+++ b/lang/cem/libcc.ansi/stdio/doprnt.c
@@ -100,7 +100,7 @@ o_print(va_list *ap, int flags, char *s, char c, int precision, int is_signed)
 	case 'p':	base = 16;	break;
 	}
 
-	s = _i_compute(unsigned_val, base, s, precision - 1);
+	s = _i_compute(unsigned_val, base, s, precision);
 
 	if (c == 'X')
 		while (old_s != s) {
diff --git a/lang/cem/libcc.ansi/stdio/icompute.c b/lang/cem/libcc.ansi/stdio/icompute.c
index 3787772e7..5e7fa80f6 100644
--- a/lang/cem/libcc.ansi/stdio/icompute.c
+++ b/lang/cem/libcc.ansi/stdio/icompute.c
@@ -14,7 +14,7 @@ _i_compute(unsigned long val, int base, char *s, int nrdigits)
 
 	c= val % base ;
 	val /= base ;
-	if (val || nrdigits > 0)
+	if (val || nrdigits > 1)
 		s = _i_compute(val, base, s, nrdigits - 1);
 	*s++ = (c>9 ? c-10+'a' : c+'0');
 	return s;