diff --git a/src/lib/substituteTailwindPreflightAtRule.js b/src/lib/substituteTailwindPreflightAtRule.js
index 24060c3b8..a6a1c5931 100644
--- a/src/lib/substituteTailwindPreflightAtRule.js
+++ b/src/lib/substituteTailwindPreflightAtRule.js
@@ -4,12 +4,12 @@ import postcss from 'postcss'
 export default function() {
   return function(css) {
     css.walkAtRules('tailwind', atRule => {
-      if (atRule.params === 'preflight') {
-        atRule.before(
-          postcss.parse(fs.readFileSync(`${__dirname}/../../css/preflight.css`, 'utf8'))
-        )
-        atRule.remove()
+      if (atRule.params !== 'preflight') {
+        return
       }
+
+      atRule.before(postcss.parse(fs.readFileSync(`${__dirname}/../../css/preflight.css`, 'utf8')))
+      atRule.remove()
     })
   }
 }