diff --git a/unpacked/jax/input/TeX/jax.js b/unpacked/jax/input/TeX/jax.js
index 7afc365c4..ddbce1cf3 100644
--- a/unpacked/jax/input/TeX/jax.js
+++ b/unpacked/jax/input/TeX/jax.js
@@ -1490,7 +1490,7 @@
     
     Lap: function (name) {
       var mml = MML.mpadded(this.ParseArg(name)).With({width: 0});
-      if (name === "\\llap") {mml.lspace = "-1 width"}
+      if (name === "\\llap") {mml.lspace = "-1width"}
       this.Push(MML.TeXAtom(mml));
     },