diff --git a/src/lib/common/rdsched.c b/src/lib/common/rdsched.c
index 8faf16ef..345b6089 100644
--- a/src/lib/common/rdsched.c
+++ b/src/lib/common/rdsched.c
@@ -217,7 +217,7 @@ parse_time(time_t *t, char *s, time_t *anchor)
 	    break;
     }
 
-    if (tm.tm_mday == 0) {
+    if (tm.tm_mday == -1) {
 	/* relative to anchor */
 	nexttm = *localtime(anchor);
 	if (tm.tm_hour >= 0) {