diff --git a/.travis.yml b/.travis.yml
index 326257944c..df68fef0da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,6 @@ services:
   - redis
 
 before_script:
-  - rm -f config/services.yml config/connexions.yml config/config.yml config/config.inc config/connexion.inc config/_GV.php config/_GV.php.old
   - node --version
   - npm --version
   - npm install bower-canary mocha-phantomjs@">=2.0 <3.0" recess@">=1.1.0 <1.1.7" uglify-js -g
@@ -20,6 +19,7 @@ before_script:
   - echo 'extension="memcached.so"' > ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/memcached.ini
   - composer self-update
   - composer install --dev --prefer-source
+  - bin/developer system:uninstall
   - wget http://sphinxsearch.com/files/sphinx-2.0.6-release.tar.gz
   - tar xzf sphinx-2.0.6-release.tar.gz
   - sh -c "cd sphinx-2.0.6-release && wget http://snowball.tartarus.org/dist/libstemmer_c.tgz && tar xzf libstemmer_c.tgz && ./configure --with-libstemmer --with-iconv --with-mysql --enable-id64 --quiet && make -j --quiet && sudo make install"
diff --git a/bin/developer b/bin/developer
index 38275b527c..c2fe0c8cbe 100755
--- a/bin/developer
+++ b/bin/developer
@@ -20,6 +20,7 @@ use Alchemy\Phrasea\Command\Developer\InstallAll;
 use Alchemy\Phrasea\Command\Developer\JavascriptBuilder;
 use Alchemy\Phrasea\Command\Developer\RegenerateSqliteDb;
 use Alchemy\Phrasea\Command\Developer\RoutesDumper;
+use Alchemy\Phrasea\Command\Developer\Uninstaller;
 
 use Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper;
 use Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper;
@@ -77,6 +78,7 @@ $cli->command(new RoutesDumper());
 $cli->command(new Behat());
 $cli->command(new LessCompiler());
 $cli->command(new JavascriptBuilder());
+$cli->command(new Uninstaller());
 $cli->command(new \module_console_systemTemplateGenerator('system:generate-templates'));
 
 $cli['console']->addCommands(array(
diff --git a/build-env.sh b/build-env.sh
index f62912c8fb..7cb2c77d19 100755
--- a/build-env.sh
+++ b/build-env.sh
@@ -1,7 +1,8 @@
-rm -f config/configuration.yml config/services.yml config/connexions.yml config/config.yml config/config.inc config/connexion.inc config/_GV.php config/_GV.php.old || exit 1
+composer install --dev
+./bin/developer dependencies:all || exit 1
+./bin/developer system:uninstall || exit 1
 cp -f hudson/connexion.inc config/ || exit 1
 cp -f hudson/_GV.php config/ || exit 1
-./bin/developer dependencies:all || exit 1
 sudo mysql -e 'drop database ab_test;drop database db_test; drop database ab_unitTests; drop database db_unitTests;' || exit 1
 sudo mysql -e 'create database ab_test;create database db_test; create database ab_unitTests; create database db_unitTests;' || exit 1
 sudo mysql -e "GRANT ALL PRIVILEGES ON ab_unitTests.* TO 'phraseaUnitTests'@'localhost' IDENTIFIED BY 'iWvGxPE8' WITH GRANT OPTION" || exit 1
diff --git a/lib/Alchemy/Phrasea/Command/Developer/Uninstaller.php b/lib/Alchemy/Phrasea/Command/Developer/Uninstaller.php
new file mode 100644
index 0000000000..47e9fdab94
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Command/Developer/Uninstaller.php
@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2013 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Command\Developer;
+
+use Alchemy\Phrasea\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Finder\Finder;
+
+class Uninstaller extends Command
+{
+    public function __construct()
+    {
+        parent::__construct('system:uninstall');
+
+        $this->setDescription('Uninstall Phraseanet');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doExecute(InputInterface $input, OutputInterface $output)
+    {
+        $root = $this->container['root.path'];
+
+        foreach (array(
+            $root.'/tmp/configuration-compiled.php',
+            $root.'/config/configuration.yml',
+            $root.'/config/services.yml',
+            $root.'/config/connexions.yml',
+            $root.'/config/config.yml',
+            $root.'/config/config.inc',
+            $root.'/config/connexion.inc',
+            $root.'/config/_GV.php',
+            $root.'/config/_GV.php.old',
+            $root.'/tmp/cache_registry.php',
+            $root.'/tmp/cache_registry.yml',
+            ) as $file) {
+            if (is_file($file)) {
+                unlink($file);
+            }
+        }
+
+        foreach (array(
+            $root.'/tmp/serializer',
+            $root.'/tmp/cache_twig',
+            $root.'/tmp/cache_minify',
+            $root.'/tmp/download',
+            $root.'/tmp/locks',
+            $root.'/tmp/cache',
+            ) as $dir) {
+            if (is_dir($dir)) {
+                $finder = new Finder();
+                foreach ($finder->files()->in($dir) as $file) {
+                    unlink($file);
+                }
+            }
+        }
+
+        return 0;
+    }
+}