diff --git a/cmd/podman/system_df.go b/cmd/podman/system_df.go
index 183c5a7ddd..60da4238a9 100644
--- a/cmd/podman/system_df.go
+++ b/cmd/podman/system_df.go
@@ -28,6 +28,7 @@ var (
 	`
 	_dfSystemCommand = &cobra.Command{
 		Use:   "df",
+		Args:  noSubArgs,
 		Short: "Show podman disk usage",
 		Long:  dfSystemDescription,
 		RunE: func(cmd *cobra.Command, args []string) error {