diff --git a/.gitignore b/.gitignore
index 51bf003..e7fb1a4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 /out
 .next
 node_modules
-.DS_Store
\ No newline at end of file
+.DS_Store
+yarn.lock
\ No newline at end of file
diff --git a/README.md b/README.md
index 07f29f4..bc969b6 100644
--- a/README.md
+++ b/README.md
@@ -9,4 +9,4 @@ ETHPrize single page React website
 
 `npm run deploy` to deploy to `https://nona-creative.github.io/ETHPrize`
 
-`yarn lint` runs the eslinter
+`npm lint` runs the eslinter
diff --git a/next.config.js b/next.config.js
index ef52ee3..dd0dd53 100644
--- a/next.config.js
+++ b/next.config.js
@@ -1,7 +1,10 @@
-const withSass = require('@zeit/next-sass')
+const withSass = require('@zeit/next-sass');
+
+const dev = process && process.env && process.env.NODE_ENV === 'development';
+
 module.exports =
   withSass({
-    assetPrefix: isProduction ? '/ETHPrize' : '',
+    assetPrefix: dev ? '' : '/ETHPrize',
     exportPathMap: function(defaultPathMap) {
       return {
         '/': { page: '/' }