diff --git a/test/css/variables.css b/test/css/variables.css
index faca880c..1f27920d 100644
--- a/test/css/variables.css
+++ b/test/css/variables.css
@@ -54,4 +54,6 @@
   mul-cm-1: 196cm;
   add-px-1: 15.4px;
   add-px-2: 393.35275591px;
+  mul-px-2: 140px;
+  mul-px-3: 140px;
 }
diff --git a/test/less/variables.less b/test/less/variables.less
index 96f3555b..d45293f8 100644
--- a/test/less/variables.less
+++ b/test/less/variables.less
@@ -94,5 +94,7 @@
     mul-cm-1: (@cm * (@em * @px));
     add-px-1: (@px + @em);
     add-px-2: ((@px + @em) + @cm);
+    mul-px-2: ((1 * @px) * @cm);
+    mul-px-3: ((@px * 1) * @cm);
   }
 }