diff --git a/application/clicommands/Icinga2Command.php b/application/clicommands/Icinga2Command.php
index eb2ba5c..3ae1335 100644
--- a/application/clicommands/Icinga2Command.php
+++ b/application/clicommands/Icinga2Command.php
@@ -179,7 +179,7 @@ EOT
      *
      * @return  array[]
      */
-    protected function cartesianProduct(array & $input)
+    protected function cartesianProduct(array &$input)
     {
         $results = [[]];
 
diff --git a/application/controllers/GraphController.php b/application/controllers/GraphController.php
index 55eb428..5f8a739 100644
--- a/application/controllers/GraphController.php
+++ b/application/controllers/GraphController.php
@@ -99,10 +99,10 @@ class GraphController extends MonitoringAwareController
     /**
      * Do all monitored object type independend actions
      *
-     * @param   MonitoredObject     $monitoredObject        The monitored object to render the graphs of
-     * @param   string              $checkCommand           The check command of the monitored object we supply an image for
-     * @param   string|null         $obscuredCheckCommand   The "real" check command (if any) of the monitored object
-     *                                                      we display graphs for
+     * @param MonitoredObject $monitoredObject      The monitored object to render the graphs of
+     * @param string          $checkCommand         The check command of the monitored object we supply an image for
+     * @param string|null     $obscuredCheckCommand The "real" check command (if any) of the monitored object
+     *                                              we display graphs for
      */
     protected function supplyImage(MonitoredObject $monitoredObject, $checkCommand, $obscuredCheckCommand)
     {
@@ -139,6 +139,7 @@ class GraphController extends MonitoringAwareController
                     ->setShowLegend((bool) $this->graphParams['legend'])
                     ->serveImage($this->getResponse());
 
+                // not falling through, serveImage exits
             default:
                 throw new HttpBadRequestException('%s', $this->translate(
                     'Graphite Web yields more than one metric for the given filter.'
diff --git a/application/forms/TimeRangePicker/CustomForm.php b/application/forms/TimeRangePicker/CustomForm.php
index a190b9d..219e434 100644
--- a/application/forms/TimeRangePicker/CustomForm.php
+++ b/application/forms/TimeRangePicker/CustomForm.php
@@ -130,7 +130,8 @@ class CustomForm extends Form
         $decorators = [];
         foreach ($elementDecorators as $key => $decorator) {
             if ($key === 'Zend_Form_Decorator_ViewHelper') {
-                $decorators['Zend_Form_Decorator_FormElements'] = $group->getDecorators()['Zend_Form_Decorator_FormElements'];
+                $decorators['Zend_Form_Decorator_FormElements'] =
+                    $group->getDecorators()['Zend_Form_Decorator_FormElements'];
             } else {
                 $decorators[$key] = (new Proxy())->setActualDecorator($decorator->setElement($element));
             }
diff --git a/library/Graphite/Graphing/GraphiteWebClient.php b/library/Graphite/Graphing/GraphiteWebClient.php
index baa8fe3..8f78aef 100644
--- a/library/Graphite/Graphing/GraphiteWebClient.php
+++ b/library/Graphite/Graphing/GraphiteWebClient.php
@@ -92,7 +92,8 @@ class GraphiteWebClient
      *
      * @return  string
      */
-    public function escapeMetricPath($metricPath) {
+    public function escapeMetricPath($metricPath)
+    {
         return preg_replace_callback(
             '/[[\]]/',
             function (array $matches) {
diff --git a/library/Graphite/Graphing/Template.php b/library/Graphite/Graphing/Template.php
index 6e33752..25302aa 100644
--- a/library/Graphite/Graphing/Template.php
+++ b/library/Graphite/Graphing/Template.php
@@ -70,8 +70,12 @@ class Template
      *
      * @return  Chart[]
      */
-    public function getCharts(MetricsDataSource $dataSource, MonitoredObject $monitoredObject, array $filter, array & $excludeMetrics = [])
-    {
+    public function getCharts(
+        MetricsDataSource $dataSource,
+        MonitoredObject $monitoredObject,
+        array $filter,
+        array &$excludeMetrics = []
+    ) {
         $metrics = [];
         $metricsUsed = 0;
         $metricsExcluded = 0;
@@ -167,8 +171,12 @@ class Template
      * @param   string[][]      $metricsCombinations
      * @param   string[]        $currentCombination
      */
-    protected function combineMetrics(array & $metrics, array & $possibleCombinations, array & $metricsCombinations, array $currentCombination = [])
-    {
+    protected function combineMetrics(
+        array &$metrics,
+        array &$possibleCombinations,
+        array &$metricsCombinations,
+        array $currentCombination = []
+    ) {
         if (empty($currentCombination)) {
             foreach ($metrics as $curveName => & $curveMetrics) {
                 foreach ($curveMetrics as $metric => & $_) {
diff --git a/library/Graphite/Graphing/Templates.php b/library/Graphite/Graphing/Templates.php
index 05736f3..12e189b 100644
--- a/library/Graphite/Graphing/Templates.php
+++ b/library/Graphite/Graphing/Templates.php
@@ -144,7 +144,7 @@ class Templates
                             $templateName,
                             $path,
                             implode(', ', array_map(
-                                function($option) {
+                                function ($option) {
                                     return "\"graph.$option\"";
                                 },
                                 $standalone
diff --git a/library/Graphite/Util/InternalProcessTracker.php b/library/Graphite/Util/InternalProcessTracker.php
index 8efac05..f7f2df6 100644
--- a/library/Graphite/Util/InternalProcessTracker.php
+++ b/library/Graphite/Util/InternalProcessTracker.php
@@ -1,6 +1,7 @@
 <?php
 
 namespace Icinga\Module\Graphite\Util;
+
 use Icinga\Authentication\Auth;
 use Icinga\Security\SecurityException;
 
diff --git a/library/Graphite/Web/Widget/Graphs.php b/library/Graphite/Web/Widget/Graphs.php
index 25871ec..82ce666 100644
--- a/library/Graphite/Web/Widget/Graphs.php
+++ b/library/Graphite/Web/Widget/Graphs.php
@@ -241,7 +241,10 @@ abstract class Graphs extends AbstractWidget
                     IPT::indent();
 
                     $charts = $template->getCharts(
-                        static::getMetricsDataSource(), $this->monitoredObject, [], $excludeMetrics
+                        static::getMetricsDataSource(),
+                        $this->monitoredObject,
+                        [],
+                        $excludeMetrics
                     );
 
                     if (! empty($charts)) {
@@ -295,8 +298,8 @@ abstract class Graphs extends AbstractWidget
 
                                 $img = '<img id="graphiteImg-'
                                     . md5((string) $imageUrl->without('cachebuster'))
-                                    . "\" src=\"$src\" data-actualimageurl=\"$imageUrl\" class=\"detach graphiteImg\" alt=\"\""
-                                    . " width=\"$this->width\" height=\"$this->height\""
+                                    . "\" src=\"$src\" data-actualimageurl=\"$imageUrl\" class=\"detach graphiteImg\""
+                                    . " alt=\"\" width=\"$this->width\" height=\"$this->height\""
                                     . " style=\"min-width: {$this->width}px; min-height: {$this->height}px;\">";
                             }
 
diff --git a/library/Graphite/Web/Widget/Graphs/Service.php b/library/Graphite/Web/Widget/Graphs/Service.php
index be3b68b..c464c0a 100644
--- a/library/Graphite/Web/Widget/Graphs/Service.php
+++ b/library/Graphite/Web/Widget/Graphs/Service.php
@@ -35,7 +35,7 @@ class Service extends Graphs
     {
         return $url
             ->setParam('host.name', $this->monitoredObject->getHost()->getName())
-            ->setParam('service.name',  $this->monitoredObject->getName());
+            ->setParam('service.name', $this->monitoredObject->getName());
     }
 
     protected function getMonitoredObjectIdentifier()