diff --git a/lib/optimizer/level-1/optimize.js b/lib/optimizer/level-1/optimize.js
index d54fb53ea..13cfd8c52 100644
--- a/lib/optimizer/level-1/optimize.js
+++ b/lib/optimizer/level-1/optimize.js
@@ -336,7 +336,7 @@ function optimizeZeroUnits(name, value) {
 }
 
 function removeQuotes(name, value) {
-  if (name == 'content' || name.indexOf('font-feature-settings') > -1 || name.indexOf('grid-') > -1) {
+  if (name == 'content' || name.indexOf('font-variation-settings') > -1 || name.indexOf('font-feature-settings') > -1 || name.indexOf('grid-') > -1) {
     return value;
   }