diff --git a/cli/params.go b/cli/params.go
index 6f6017ca3..9e8183b8a 100644
--- a/cli/params.go
+++ b/cli/params.go
@@ -9,8 +9,14 @@ import (
 var fetchParamCmd = &cli.Command{
 	Name:  "fetch-params",
 	Usage: "Fetch proving parameters",
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name:  "only-verify-keys",
+			Usage: "only download the verify keys",
+		},
+	},
 	Action: func(cctx *cli.Context) error {
-		if err := build.GetParams(true); err != nil {
+		if err := build.GetParams(!cctx.Bool("only-verify-keys")); err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}