diff --git a/src/app/rpmostree-compose-builtin-tree.c b/src/app/rpmostree-compose-builtin-tree.c
index 8652d82b71..ccbb693b73 100644
--- a/src/app/rpmostree-compose-builtin-tree.c
+++ b/src/app/rpmostree-compose-builtin-tree.c
@@ -105,7 +105,7 @@ static GOptionEntry install_option_entries[] = {
   { "workdir-tmpfs", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_NONE, &opt_workdir_tmpfs, "Use tmpfs for working state", NULL },
   { "ex-write-lockfile-to", 0, 0, G_OPTION_ARG_STRING, &opt_write_lockfile_to, "Write lockfile to FILE", "FILE" },
   { "ex-lockfile", 0, 0, G_OPTION_ARG_STRING_ARRAY, &opt_lockfiles, "Read lockfile from FILE", "FILE" },
-  { "ex-lockfile-strict", 0, 0, G_OPTION_ARG_NONE, &opt_lockfile_strict, "With --ex-lockfile, require full match", NULL },
+  { "ex-lockfile-strict", 0, 0, G_OPTION_ARG_NONE, &opt_lockfile_strict, "With --ex-lockfile, only allow installing locked packages", NULL },
   { NULL }
 };