diff --git a/README.md b/README.md
index f79ead8c..ae60554c 100644
--- a/README.md
+++ b/README.md
@@ -136,13 +136,13 @@ This project allows different configurations per environment. The files that man
 
 ```
 ├─ src/config/
-|  ├─ config.{ENVIRONMENT}.ts
+|  ├─ config.{NODE_ENV}.ts
 |  └─ index.ts
 ```
 
-Before the build all the variables are shared between `index.ts` and `config.development.ts` but in the build process inside `rollup.config.js` the `import` of that last file is changed by the file related with the target environment following the rule `config.{ENVIRONMENT}.ts` and loading the expected configuration file.
+Before the build all the variables are shared between `index.ts` and `config.development.ts` but in the build process the `import` of that last file is changed by the file related with the target environment following the rule `config.{NODE_ENV}.ts` and loading the expected configuration file.
 
-Lastly, the way to use that configuration is quite simple. You only need to import it in your `.ts` file:
+Lastly, the way to use that configuration is quite simple. You only need to import it:
 
 ```typescript
 import { config } from '../config';
diff --git a/rollup.config.js b/rollup.config.js
index 7e36a5f4..229719cf 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -56,7 +56,10 @@ const config = merge(
         inlineSources: false
       }),
       replace({
-        'process.env.NODE_ENV': JSON.stringify('production'),
+        'process.env.NODE_ENV': JSON.stringify('production')
+      }),
+      replace({
+        include: 'src/config/index.ts',
         'config.development': `config.${ENVIRONMENT}`
       }),
       copy({
diff --git a/src/config/config.development.ts b/src/config/config.development.ts
index 0d3e3360..3c23ec59 100644
--- a/src/config/config.development.ts
+++ b/src/config/config.development.ts
@@ -5,6 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-export const config = {
+export default {
   environment: 'development'
 };
diff --git a/src/config/config.production.ts b/src/config/config.production.ts
index 639d4749..4c88b116 100644
--- a/src/config/config.production.ts
+++ b/src/config/config.production.ts
@@ -5,6 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-export const config = {
+export default {
   environment: 'production'
 };
diff --git a/src/config/config.staging.ts b/src/config/config.staging.ts
index 8c7557db..d5324616 100644
--- a/src/config/config.staging.ts
+++ b/src/config/config.staging.ts
@@ -5,6 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-export const config = {
+export default {
   environment: 'staging'
 };
diff --git a/src/config/index.ts b/src/config/index.ts
index b110a8df..0dc0c4d1 100644
--- a/src/config/index.ts
+++ b/src/config/index.ts
@@ -5,14 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import { config as environmentConfig } from './config.development';
-
-const sharedConfig = {
-  name: 'MyApplication',
-  description: 'MyApplication description'
-};
+import environmentConfig from './config.development';
 
 export const config = {
-  ...sharedConfig,
+  name: 'MyApplication',
+  description: 'MyApplication description',
   ...environmentConfig
 };