diff --git a/lib/function/arithmetic/multiply.js b/lib/function/arithmetic/multiply.js
index 39bfde411..41fee6baa 100644
--- a/lib/function/arithmetic/multiply.js
+++ b/lib/function/arithmetic/multiply.js
@@ -628,7 +628,7 @@ function factory (type, config, load, typed) {
       size: [arows, bcolumns]
     });
     // workspace
-    var x = new Array(arows);
+    var x = values ? new Array(arows) : undefined;
     // vector with marks indicating a value x[i] exists in a given column
     var w = new Array(arows);