diff --git a/cmd/um/main.go b/cmd/um/main.go
index 8652d82..6b7715c 100644
--- a/cmd/um/main.go
+++ b/cmd/um/main.go
@@ -53,7 +53,7 @@ func main() {
 			&cli.StringFlag{Name: "qmc-mmkv", Aliases: []string{"db"}, Usage: "path to QQMusic mmkv path", Required: false},
 			&cli.StringFlag{Name: "qmc-mmkv-key", Aliases: []string{"key"}, Usage: "QQMusic mmkv password (16 ascii chars)", Required: false},
 			&cli.StringFlag{Name: "qmpc-mmkv-cli-exe", Usage: "path to QMPC MMKV Cli by LSR (v0.1.1+, auto-fetch QMC keys; Windows only)", Required: false, Value: "qmpc-mmkv-cli.exe"},
-			&cli.StringFlag{Name: "qmc-android-db", Usage: "path to QQMusic Android player_process_db (dump from android: /data/data/com.tencent.qqmusic/databases/)", Required: false, Value: "player_process_db"},
+			&cli.StringFlag{Name: "qmc-android-db", Usage: "path to QQMusic Android player_process_db (dump from android: /data/data/com.tencent.qqmusic/databases/)", Required: false, Value: ""},
 			&cli.StringFlag{Name: "kgg-db", Usage: "path to kgg db (win32 kugou v11)", Required: false},
 			&cli.BoolFlag{Name: "remove-source", Aliases: []string{"rs"}, Usage: "remove source file", Required: false, Value: false},
 			&cli.BoolFlag{Name: "skip-noop", Aliases: []string{"n"}, Usage: "skip noop decoder", Required: false, Value: true},
@@ -186,10 +186,18 @@ func appMain(c *cli.Context) (err error) {
 	if err != nil {
 		return err
 	}
+	qmcAndroidKeysPath := c.String("qmc-android-db")
+	if qmcAndroidKeysPath == "" {
+		// By default, use the current directory's `player_process_db` file if exists.
+		// Do not complain if this file does not exist.
+		if db, err := os.Stat("player_process_db"); err == nil && !db.IsDir() {
+			qmcAndroidKeysPath = "player_process_db"
+		}
+	}
 	qmcKeys = mmkv.Merge(
 		qmcKeys,
 		qmc.LoadUserMMKV(c.String("qmc-mmkv"), c.String("qmc-mmkv-key"), logger),
-		qmc.LoadAndroidDB(c.String("qmc-android-db"), logger),
+		qmc.LoadAndroidDB(qmcAndroidKeysPath, logger),
 	)
 
 	kggDbPath := c.String("kgg-db")