diff --git a/lib/ulib/crontab b/lib/ulib/crontab
index cc08d1d..632e612 100644
--- a/lib/ulib/crontab
+++ b/lib/ulib/crontab
@@ -154,7 +154,7 @@ function ctmatch_one(ctval, ref,              parts, part, i, j, start, end, ste
   #print "final: is " ref " ~ " ctval " ? " (ok? "yes": "no") #DEBUG
   return ok
 }
-function ctmatch_all(M, H, dom, mon, dow, refM, refH, refdom, refmon, refdow,               Mok, Hok, domok, monok, dowok) {
+function ctmatch_all(M, H, dom, mon, dow, refM, refH, refdom, refmon, refdow,               Mok, Hok, alldom, domok, monok, alldow, dowok, doxok) {
     if (refM == "**ANY**") return 1
 
     gsub(/\*/, "0-59", M)
@@ -163,16 +163,28 @@ function ctmatch_all(M, H, dom, mon, dow, refM, refH, refdom, refmon, refdow,
     gsub(/\*/, "0-23", H)
     Hok = ctmatch_one(H, refH)
 
+    alldom = dom == "*"
     gsub(/\*/, "1-31", dom)
     domok = ctmatch_one(dom, refdom)
 
     gsub(/\*/, "1-12", mon)
     monok = ctmatch_one(mon, refmon)
 
+    alldow = dow == "*"
     gsub(/\*/, "1-7", dow)
     dowok = ctmatch_one(dow, refdow)
 
-    return Mok && Hok && monok && (domok || dowok)
+    if (alldom && alldow) {
+      doxok = 1
+    } else if (alldom) {
+      doxok = dowok
+    } else if (alldow) {
+      doxok = domok
+    } else {
+      doxok = domok || dowok
+    }
+
+    return Mok && Hok && monok && doxok
 }
 function print_cmd(cmd) {
   print "__ctexec " quote_value(cmd)