diff --git a/cli/wallet.go b/cli/wallet.go
index 22234ca5a..29f0b2db9 100644
--- a/cli/wallet.go
+++ b/cli/wallet.go
@@ -215,6 +215,10 @@ var walletImport = &cli.Command{
 			Usage: "specify input format for key",
 			Value: "hex-lotus",
 		},
+		&cli.BoolFlag{
+			Name:  "as-default",
+			Usage: "import the given key as your new default key",
+		},
 	},
 	Action: func(cctx *cli.Context) error {
 		api, closer, err := GetFullNodeAPI(cctx)
@@ -287,6 +291,12 @@ var walletImport = &cli.Command{
 			return err
 		}
 
+		if cctx.Bool("as-default") {
+			if err := api.WalletSetDefault(ctx, addr); err != nil {
+				return fmt.Errorf("failed to set default key: %w", err)
+			}
+		}
+
 		fmt.Printf("imported key %s successfully!\n", addr)
 		return nil
 	},
diff --git a/documentation/en/local-dev-net.md b/documentation/en/local-dev-net.md
index f952ce3ea..24c732db7 100644
--- a/documentation/en/local-dev-net.md
+++ b/documentation/en/local-dev-net.md
@@ -28,7 +28,7 @@ Create the genesis block and start up the first node:
 Then, in another console, import the genesis miner key:
 
 ```sh
-./lotus wallet import ~/.genesis-sectors/pre-seal-t01000.key
+./lotus wallet import --as-default ~/.genesis-sectors/pre-seal-t01000.key
 ```
 
 Set up the genesis miner: