Index: trunk/psModules/src/config/pmConfigRecipes.c
===================================================================
--- trunk/psModules/src/config/pmConfigRecipes.c	(revision 18908)
+++ trunk/psModules/src/config/pmConfigRecipes.c	(revision 20354)
@@ -220,8 +220,12 @@
         }
         if (!strcmp (flag, "-Db")) {
-            if (!strcasecmp (argv[argNum+1], "true")) {
+            if (!strcasecmp(argv[argNum+1], "true") || !strcasecmp(argv[argNum+1], "t") ||
+                !strcasecmp(argv[argNum+1], "1")) {
                 psMetadataAddBool (recipe, PS_LIST_TAIL, key, PS_META_REPLACE, "", true);
+            } else if (!strcasecmp(argv[argNum+1], "false") || !strcasecmp(argv[argNum+1], "f") ||
+                       !strcasecmp(argv[argNum+1], "0")) {
+                psMetadataAddBool (recipe, PS_LIST_TAIL, key, PS_META_REPLACE, "", false);
             } else {
-                psMetadataAddBool (recipe, PS_LIST_TAIL, key, PS_META_REPLACE, "", false);
+                psWarning("Couldn't interpret option for %s (%s) --- ignored", argv[argNum], argv[argNum+1]);
             }
             valid = true;