Index: scheduler/conf.c
===================================================================
--- scheduler/conf.c	(revision 9828)
+++ scheduler/conf.c	(working copy)
@@ -2593,11 +2593,11 @@
 		      "FaxRetryLimit is deprecated; use "
 		      "JobRetryLimit on line %d.", linenum);
     }
-    else if (!_cups_strcasecmp(line, "Port") || !_cups_strcasecmp(line, "Listen")
+    else if ((!_cups_strcasecmp(line, "Port") || !_cups_strcasecmp(line, "Listen")
 #ifdef HAVE_SSL
              || !_cups_strcasecmp(line, "SSLPort") || !_cups_strcasecmp(line, "SSLListen")
 #endif /* HAVE_SSL */
-	     )
+	     ) && value)
     {
      /*
       * Add listening address(es) to the list...
@@ -3740,6 +3740,12 @@
     else if (!_cups_strcasecmp(line, "</Limit>") ||
              !_cups_strcasecmp(line, "</LimitExcept>"))
       loc = parent;
+    else if (!value)
+    {
+      cupsdLogMessage(CUPSD_LOG_ERROR, "Missing value on line %d.", linenum);
+      if (FatalErrors & CUPSD_FATAL_CONFIG)
+	return (0);
+    }
     else if (!parse_aaa(loc, line, value, linenum))
     {
       cupsdLogMessage(CUPSD_LOG_ERROR,
@@ -3889,6 +3895,12 @@
 
       op = NULL;
     }
+    else if (!value)
+    {
+      cupsdLogMessage(CUPSD_LOG_ERROR, "Missing value on line %d.", linenum);
+      if (FatalErrors & CUPSD_FATAL_CONFIG)
+	return (0);
+    }
     else if (!_cups_strcasecmp(line, "JobPrivateAccess") ||
 	     !_cups_strcasecmp(line, "JobPrivateValues") ||
 	     !_cups_strcasecmp(line, "SubscriptionPrivateAccess") ||