diff --git a/base/mdb/mdb.go b/base/mdb/mdb.go
index 62255e2e..aea64923 100644
--- a/base/mdb/mdb.go
+++ b/base/mdb/mdb.go
@@ -133,16 +133,17 @@ const (
 	WEIGHT = "weight"
 	SUBKEY = "mdb.sub"
 
-	ACTION = "action"
-	UPLOAD = "upload"
-	RECENT = "recent"
-	REPEAT = "repeat"
-	REVERT = "revert"
-	RENAME = "rename"
-	VENDOR = "vendor"
-	PRUNE  = "prune"
-	TABLE  = "table"
-	CLASS  = "class"
+	ACTION   = "action"
+	UPLOAD   = "upload"
+	RECENT   = "recent"
+	REPEAT   = "repeat"
+	REVERT   = "revert"
+	RENAME   = "rename"
+	VENDOR   = "vendor"
+	PRUNE    = "prune"
+	TABLE    = "table"
+	CLASS    = "class"
+	DATABASE = "database"
 
 	PAGE = "page"
 	NEXT = "next"