diff --git a/lib/roken/vis.c b/lib/roken/vis.c
index c8d19a445..155b148e8 100644
--- a/lib/roken/vis.c
+++ b/lib/roken/vis.c
@@ -223,9 +223,9 @@ do_svis(char *dst, int c, int flag, int nextc, const char *extra)
 	}
 	if (isextra || ((c & 0177) == ' ') || (flag & VIS_OCTAL)) {
 		*dst++ = '\\';
-		*dst++ = (u_char)(((u_int32_t)(u_char)c >> 6) & 03) + '0';
-		*dst++ = (u_char)(((u_int32_t)(u_char)c >> 3) & 07) + '0';
-		*dst++ =			     (c	      & 07) + '0';
+		*dst++ = (u_char)(((unsigned int)(u_char)c >> 6) & 03) + '0';
+		*dst++ = (u_char)(((unsigned int)(u_char)c >> 3) & 07) + '0';
+		*dst++ = (u_char)(			 c       & 07) + '0';
 	} else {
 		if ((flag & VIS_NOSLASH) == 0) *dst++ = '\\';
 		if (c & 0200) {