diff --git a/cmd/zfs/zfs_main.c b/cmd/zfs/zfs_main.c
index 54b31b7a7779..34045427b7d8 100644
--- a/cmd/zfs/zfs_main.c
+++ b/cmd/zfs/zfs_main.c
@@ -424,7 +424,8 @@ get_usage(zfs_help_t idx)
 	case HELP_WAIT:
 		return (gettext("\twait [-t <activity>] <filesystem>\n"));
 	case HELP_USERNS:
-		return (gettext("\tuserns <attach|detach> <nsnum> <filesystem>\n"));
+		return (gettext("\tuserns <attach|detach> <nsnum> "
+		    "<filesystem>\n"));
 	default:
 		__builtin_unreachable();
 	}