diff --git a/db/boltdb.go b/db/boltdb.go
index 41021f4d..f8702e45 100644
--- a/db/boltdb.go
+++ b/db/boltdb.go
@@ -25,6 +25,7 @@ var (
 
 const (
 	NameIdent = "peername"
+	FileName  = "data.db"
 )
 
 func NewBoltDB(dbPathname string) (*BoltDB, error) {
diff --git a/prog/weaver/main.go b/prog/weaver/main.go
index 2d47a8fb..5c57c7f8 100644
--- a/prog/weaver/main.go
+++ b/prog/weaver/main.go
@@ -248,7 +248,7 @@ func main() {
 		Log.Fatalf("--awsvpc mode is not compatible with the --password option")
 	}
 
-	db, err := db.NewBoltDB(dbPrefix + "data.db")
+	db, err := db.NewBoltDB(dbPrefix + db.FileName)
 	checkFatal(err)
 	defer db.Close()