diff --git a/src/Composer/Autoload/AutoloadGenerator.php b/src/Composer/Autoload/AutoloadGenerator.php
index 5a0da1f40..f7dfdef0d 100644
--- a/src/Composer/Autoload/AutoloadGenerator.php
+++ b/src/Composer/Autoload/AutoloadGenerator.php
@@ -922,7 +922,7 @@ INITIALIZER;
             $packages[$name] = $package;
         }
 
-        $add = function (PackageInterface $package) use (&$add, $mainPackage, $packages, &$include) {
+        $add = function (PackageInterface $package) use (&$add, $packages, &$include) {
             foreach ($package->getRequires() as $link) {
                 $target = $link->getTarget();
                 if (!isset($include[$target])) {
diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index 168b0f285..d42da046b 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -383,7 +383,7 @@ EOT
                         }
 
                         if ($latestPackage && $latestPackage->isAbandoned()) {
-                            $replacement = (is_string($latestPackage->getReplacementPackage()))
+                            $replacement = is_string($latestPackage->getReplacementPackage())
                                 ? 'Use ' . $latestPackage->getReplacementPackage() . ' instead'
                                 : 'No replacement was suggested';
                             $packageWarning = sprintf(
diff --git a/src/Composer/Command/StatusCommand.php b/src/Composer/Command/StatusCommand.php
index f7b0ef37e..6ea388a7a 100644
--- a/src/Composer/Command/StatusCommand.php
+++ b/src/Composer/Command/StatusCommand.php
@@ -12,7 +12,6 @@
 
 namespace Composer\Command;
 
-use Composer\Downloader\DownloaderInterface;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
diff --git a/src/Composer/DependencyResolver/GenericRule.php b/src/Composer/DependencyResolver/GenericRule.php
index 0af3617d4..df8a2a003 100644
--- a/src/Composer/DependencyResolver/GenericRule.php
+++ b/src/Composer/DependencyResolver/GenericRule.php
@@ -75,7 +75,7 @@ class GenericRule extends Rule
      */
     public function __toString()
     {
-        $result = ($this->isDisabled()) ? 'disabled(' : '(';
+        $result = $this->isDisabled() ? 'disabled(' : '(';
 
         foreach ($this->literals as $i => $literal) {
             if ($i != 0) {
diff --git a/src/Composer/DependencyResolver/Problem.php b/src/Composer/DependencyResolver/Problem.php
index debc8678c..184a55636 100644
--- a/src/Composer/DependencyResolver/Problem.php
+++ b/src/Composer/DependencyResolver/Problem.php
@@ -247,6 +247,6 @@ class Problem
      */
     protected function constraintToText($constraint)
     {
-        return ($constraint) ? ' '.$constraint->getPrettyString() : '';
+        return $constraint ? ' '.$constraint->getPrettyString() : '';
     }
 }
diff --git a/src/Composer/DependencyResolver/Rule2Literals.php b/src/Composer/DependencyResolver/Rule2Literals.php
index 359fe4f20..c44a15ab2 100644
--- a/src/Composer/DependencyResolver/Rule2Literals.php
+++ b/src/Composer/DependencyResolver/Rule2Literals.php
@@ -93,7 +93,7 @@ class Rule2Literals extends Rule
      */
     public function __toString()
     {
-        $result = ($this->isDisabled()) ? 'disabled(' : '(';
+        $result = $this->isDisabled() ? 'disabled(' : '(';
 
         $result .= $this->literal1 . '|' . $this->literal2 . ')';
 
diff --git a/src/Composer/DependencyResolver/RuleSetGenerator.php b/src/Composer/DependencyResolver/RuleSetGenerator.php
index 2cf150a33..3855f7d04 100644
--- a/src/Composer/DependencyResolver/RuleSetGenerator.php
+++ b/src/Composer/DependencyResolver/RuleSetGenerator.php
@@ -215,7 +215,7 @@ class RuleSetGenerator
             }
 
             // check obsoletes and implicit obsoletes of a package
-            $isInstalled = (isset($this->installedMap[$package->id]));
+            $isInstalled = isset($this->installedMap[$package->id]);
 
             foreach ($package->getReplaces() as $link) {
                 $obsoleteProviders = $this->pool->whatProvides($link->getTarget(), $link->getConstraint());
@@ -226,7 +226,7 @@ class RuleSetGenerator
                     }
 
                     if (!$this->obsoleteImpossibleForAlias($package, $provider)) {
-                        $reason = ($isInstalled) ? Rule::RULE_INSTALLED_PACKAGE_OBSOLETES : Rule::RULE_PACKAGE_OBSOLETES;
+                        $reason = $isInstalled ? Rule::RULE_INSTALLED_PACKAGE_OBSOLETES : Rule::RULE_PACKAGE_OBSOLETES;
                         $this->addRule(RuleSet::TYPE_PACKAGE, $this->createRule2Literals($package, $provider, $reason, $link));
                     }
                 }
diff --git a/src/Composer/DependencyResolver/Transaction.php b/src/Composer/DependencyResolver/Transaction.php
index 3674a1989..c8d3bbe53 100644
--- a/src/Composer/DependencyResolver/Transaction.php
+++ b/src/Composer/DependencyResolver/Transaction.php
@@ -49,7 +49,7 @@ class Transaction
             $package = $this->pool->literalToPackage($literal);
 
             // wanted & installed || !wanted & !installed
-            if (($literal > 0) == (isset($this->installedMap[$package->id]))) {
+            if (($literal > 0) == isset($this->installedMap[$package->id])) {
                 continue;
             }
 
diff --git a/src/Composer/Installer.php b/src/Composer/Installer.php
index f4f778ddb..1ae72aed0 100644
--- a/src/Composer/Installer.php
+++ b/src/Composer/Installer.php
@@ -251,7 +251,7 @@ class Installer
                 continue;
             }
 
-            $replacement = (is_string($package->getReplacementPackage()))
+            $replacement = is_string($package->getReplacementPackage())
                 ? 'Use ' . $package->getReplacementPackage() . ' instead'
                 : 'No replacement was suggested';
 
@@ -1033,11 +1033,8 @@ class Installer
                         $package->setReplaces($newPackage->getReplaces());
                     }
 
-                    if ($task === 'force-updates' && $newPackage && (
-                        (($newPackage->getSourceReference() && $newPackage->getSourceReference() !== $package->getSourceReference())
-                            || ($newPackage->getDistReference() && $newPackage->getDistReference() !== $package->getDistReference())
-                        )
-                    )) {
+                    if ($task === 'force-updates' && $newPackage && ($newPackage->getSourceReference() && $newPackage->getSourceReference() !== $package->getSourceReference())
+                        || ($newPackage->getDistReference() && $newPackage->getDistReference() !== $package->getDistReference())) {
                         $operations[] = new UpdateOperation($package, $newPackage);
 
                         continue;
diff --git a/src/Composer/Installer/BinaryInstaller.php b/src/Composer/Installer/BinaryInstaller.php
index a61ea86a1..0f709f60b 100644
--- a/src/Composer/Installer/BinaryInstaller.php
+++ b/src/Composer/Installer/BinaryInstaller.php
@@ -113,7 +113,7 @@ class BinaryInstaller
         }
 
         // attempt removing the bin dir in case it is left empty
-        if ((is_dir($this->binDir)) && ($this->filesystem->isDirEmpty($this->binDir))) {
+        if (is_dir($this->binDir) && $this->filesystem->isDirEmpty($this->binDir)) {
             Silencer::call('rmdir', $this->binDir);
         }
     }
diff --git a/src/Composer/Json/JsonFile.php b/src/Composer/Json/JsonFile.php
index 0557847d6..b84791420 100644
--- a/src/Composer/Json/JsonFile.php
+++ b/src/Composer/Json/JsonFile.php
@@ -281,7 +281,6 @@ class JsonFile
      * @param  string                    $json
      * @param  string                    $file
      * @throws \UnexpectedValueException
-     * @throws JsonValidationException
      * @throws ParsingException
      * @return bool                      true on success
      */
diff --git a/src/Composer/Json/JsonFormatter.php b/src/Composer/Json/JsonFormatter.php
index 8e2005715..680a57baf 100644
--- a/src/Composer/Json/JsonFormatter.php
+++ b/src/Composer/Json/JsonFormatter.php
@@ -88,7 +88,7 @@ class JsonFormatter
             if (':' === $char) {
                 // Add a space after the : character
                 $char .= ' ';
-            } elseif (('}' === $char || ']' === $char)) {
+            } elseif ('}' === $char || ']' === $char) {
                 $pos--;
                 $prevChar = substr($json, $i - 1, 1);
 
diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 04b44f7b6..f917eb838 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -230,7 +230,7 @@ class RootPackageLoader extends ArrayLoader
     {
         foreach ($requires as $reqName => $reqVersion) {
             $reqVersion = preg_replace('{^([^,\s@]+) as .+$}', '$1', $reqVersion);
-            if (preg_match('{^[^,\s@]+?#([a-f0-9]+)$}', $reqVersion, $match) && 'dev' === ($stabilityName = VersionParser::parseStability($reqVersion))) {
+            if (preg_match('{^[^,\s@]+?#([a-f0-9]+)$}', $reqVersion, $match) && 'dev' === VersionParser::parseStability($reqVersion)) {
                 $name = strtolower($reqName);
                 $references[$name] = $match[1];
             }
diff --git a/src/Composer/Package/Loader/ValidatingArrayLoader.php b/src/Composer/Package/Loader/ValidatingArrayLoader.php
index fb2eafd93..2a71be6cb 100644
--- a/src/Composer/Package/Loader/ValidatingArrayLoader.php
+++ b/src/Composer/Package/Loader/ValidatingArrayLoader.php
@@ -12,7 +12,6 @@
 
 namespace Composer\Package\Loader;
 
-use Composer\Package;
 use Composer\Package\BasePackage;
 use Composer\Semver\Constraint\Constraint;
 use Composer\Package\Version\VersionParser;
diff --git a/src/Composer/Plugin/PluginManager.php b/src/Composer/Plugin/PluginManager.php
index 9cae9ee5d..e8f4b58c3 100644
--- a/src/Composer/Plugin/PluginManager.php
+++ b/src/Composer/Plugin/PluginManager.php
@@ -169,7 +169,7 @@ class PluginManager
         $generator = $this->composer->getAutoloadGenerator();
         $autoloads = array();
         foreach ($autoloadPackages as $autoloadPackage) {
-            $downloadPath = $this->getInstallPath($autoloadPackage, ($globalRepo && $globalRepo->hasPackage($autoloadPackage)));
+            $downloadPath = $this->getInstallPath($autoloadPackage, $globalRepo && $globalRepo->hasPackage($autoloadPackage));
             $autoloads[] = array($autoloadPackage, $downloadPath);
         }
 
@@ -307,7 +307,7 @@ class PluginManager
     {
         $packages = $pool->whatProvides($link->getTarget(), $link->getConstraint());
 
-        return (!empty($packages)) ? $packages[0] : null;
+        return !empty($packages) ? $packages[0] : null;
     }
 
     /**
diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index 2daa1ceb1..f262432ff 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -565,7 +565,7 @@ class Filesystem
 
         chdir($cwd);
 
-        return (bool) $result;
+        return $result;
     }
 
     /**
diff --git a/src/Composer/Util/TlsHelper.php b/src/Composer/Util/TlsHelper.php
index b261f47a5..e04c7157e 100644
--- a/src/Composer/Util/TlsHelper.php
+++ b/src/Composer/Util/TlsHelper.php
@@ -140,7 +140,7 @@ final class TlsHelper
         //Convert PEM to DER before SHA1'ing
         $start = '-----BEGIN PUBLIC KEY-----';
         $end = '-----END PUBLIC KEY-----';
-        $pemtrim = substr($pubkeypem, (strpos($pubkeypem, $start) + strlen($start)), (strlen($pubkeypem) - strpos($pubkeypem, $end)) * (-1));
+        $pemtrim = substr($pubkeypem, strpos($pubkeypem, $start) + strlen($start), (strlen($pubkeypem) - strpos($pubkeypem, $end)) * (-1));
         $der = base64_decode($pemtrim);
 
         return sha1($der);
diff --git a/src/Composer/Util/Url.php b/src/Composer/Util/Url.php
index f8d4b446d..4a5d5f90c 100644
--- a/src/Composer/Util/Url.php
+++ b/src/Composer/Util/Url.php
@@ -13,7 +13,6 @@
 namespace Composer\Util;
 
 use Composer\Config;
-use Composer\IO\IOInterface;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>