diff -up ./src/cli/fapolicyd-cli.c.args ./src/cli/fapolicyd-cli.c

--- ./src/cli/fapolicyd-cli.c.args	2020-05-24 19:23:27.000000000 +0200

+++ ./src/cli/fapolicyd-cli.c	2020-06-01 11:58:01.397204265 +0200

@@ -232,6 +232,9 @@ static int do_manage_files(int argc, cha

 		 else

 			rc = file_update("/");

+	} else {

+		fprintf(stderr, "Missing operation option add|delete|update\n\n");

+		goto args_err;

 	}

 	return rc;