diff --git a/postcss/css-compile-variables.js b/postcss/css-compile-variables.js
index 38f5c471..cf2b451d 100644
--- a/postcss/css-compile-variables.js
+++ b/postcss/css-compile-variables.js
@@ -61,16 +61,16 @@ function extractAlias(decl) {
     }
 }
 
-function addResolvedVariablesToRootSelector(root, variables, { Rule, Declaration }) {
+function addResolvedVariablesToRootSelector(root, variables, {Rule, Declaration}) {
     const newRule = new Rule({ selector: ":root", source: root.source });
     // Add base css variables to :root
     for (const [key, value] of Object.entries(variables)) {
-        const declaration = new Declaration({ prop: `--${key}`, value });
+        const declaration = new Declaration({prop: `--${key}`, value});
         newRule.append(declaration);
     }
     // Add derived css variables to :root
     resolvedMap.forEach((value, key) => {
-        const declaration = new Declaration({ prop: key, value });
+        const declaration = new Declaration({prop: key, value});
         newRule.append(declaration);
     });
     root.append(newRule);
@@ -94,7 +94,7 @@ module.exports = (opts = {}) => {
     return {
         postcssPlugin: "postcss-compile-variables",
 
-        Once(root, { Rule, Declaration }) {
+        Once(root, {Rule, Declaration}) {
             /*
             Go through the CSS file once to extract all aliases.
             We use the extracted alias when resolving derived variables
@@ -102,7 +102,7 @@ module.exports = (opts = {}) => {
             */
             root.walkDecls(decl => extractAlias(decl));
             root.walkDecls(decl => resolveDerivedVariable(decl, opts));
-            addResolvedVariablesToRootSelector(root, opts.variables, { Rule, Declaration });
+            addResolvedVariablesToRootSelector(root, opts.variables, {Rule, Declaration});
         },
     };
 };