diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc79685..3d6f029 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Upcoming...
 
+* Translations added: Polish
 * Bump symfony, dibi
 
 ## 7.3.4 - 2020-03-23
diff --git a/README.md b/README.md
index e6a28c1..f7a1790 100644
--- a/README.md
+++ b/README.md
@@ -109,12 +109,12 @@ Precompiled build is created for non-developers. In this version, the frontend (
 You must have `git`, `php`, `npm`, and `composer` installed.
 
 ```
-git clone git@github.com:filegator/filegator.git
+git clone https://github.com/filegator/filegator.git
 cd filegator
 cp configuration_sample.php configuration.php
-sudo chmod -R 777 private/
-sudo chmod -R 777 repository/
-composer install
+chmod -R 775 private/
+chmod -R 775 repository/
+composer install --ignore-platform-reqs
 npm install
 npm run build
 ```
diff --git a/docs/development.md b/docs/development.md
index f00fad3..01acc99 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -7,12 +7,12 @@ currentMenu: development
 You must have `git`, `php`, `npm`, and `composer` installed.
 
 ```
-git clone git@github.com:filegator/filegator.git
+git clone https://github.com/filegator/filegator.git
 cd filegator
 cp configuration_sample.php configuration.php
-sudo chmod -R 777 private/
-sudo chmod -R 777 repository/
-composer install
+chmod -R 775 private/
+chmod -R 775 repository/
+composer install --ignore-platform-reqs
 npm install
 npm run build
 ```
@@ -28,7 +28,7 @@ Once everything is ready visit: `http://localhost:8080`
 
 ## Run tests & static analysis
 
-Testing requires xdebug and sqlite php extensions.
+Testing requires xdebug, php-zip and sqlite php extensions.
 
 ```
 vendor/bin/phpunit
diff --git a/docs/translations/default.md b/docs/translations/default.md
index 5b6c6a9..09ac46b 100644
--- a/docs/translations/default.md
+++ b/docs/translations/default.md
@@ -21,6 +21,7 @@ Available languages:
 - ```serbian```
 - ```french```
 - ```slovak```
+- ```polish```
 
 Please help us translating FileGator to your language by submitting a Pull Request on GitHub.
 
diff --git a/frontend/mixins/shared.js b/frontend/mixins/shared.js
index f99e554..c673235 100644
--- a/frontend/mixins/shared.js
+++ b/frontend/mixins/shared.js
@@ -44,7 +44,7 @@ const funcs = {
         'serbian': serbian,
         'french': french,
         'slovak': slovak,
-		'polish': polish,
+        'polish': polish,
       }
 
       let language = store.state.config.language