diff --git a/cmd/lotus-storage-miner/market.go b/cmd/lotus-storage-miner/market.go
index 87fe08bd9..ea5de6345 100644
--- a/cmd/lotus-storage-miner/market.go
+++ b/cmd/lotus-storage-miner/market.go
@@ -46,8 +46,9 @@ var dealsCmd = &cli.Command{
 }
 
 var dealsImportDataCmd = &cli.Command{
-	Name:  "import-data",
-	Usage: "Manually import data for a deal",
+	Name:      "import-data",
+	Usage:     "Manually import data for a deal",
+	ArgsUsage: "<proposal CID> <file>",
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := lcli.GetStorageMinerAPI(cctx)
 		if err != nil {