diff --git a/app/Console/Kernel.php b/app/Console/Kernel.php
index 9579812620..488b36c74f 100755
--- a/app/Console/Kernel.php
+++ b/app/Console/Kernel.php
@@ -32,6 +32,8 @@ class Kernel extends ConsoleKernel
      *
      * @param  \Illuminate\Console\Scheduling\Schedule  $schedule
      * @return void
+     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameters)
      */
     protected function schedule(Schedule $schedule)
     {
diff --git a/app/Exceptions/Handler.php b/app/Exceptions/Handler.php
index 7913d17568..8216857d24 100755
--- a/app/Exceptions/Handler.php
+++ b/app/Exceptions/Handler.php
@@ -34,13 +34,13 @@ class Handler extends ExceptionHandler
      *
      * This is a great spot to send exceptions to Sentry, Bugsnag, etc.
      *
-     * @param  \Exception $e
+     * @param  Exception $exception
      *
      * @return void
      */
-    public function report(Exception $e)
+    public function report(Exception $exception)
     {
-        parent::report($e);
+        parent::report($exception);
     }
 
     /**
diff --git a/app/Http/Controllers/Chart/CategoryController.php b/app/Http/Controllers/Chart/CategoryController.php
index eb91f28e00..199319e62b 100644
--- a/app/Http/Controllers/Chart/CategoryController.php
+++ b/app/Http/Controllers/Chart/CategoryController.php
@@ -55,8 +55,6 @@ class CategoryController extends Controller
         $start   = Navigation::startOfPeriod($start, $range);
         $end     = new Carbon;
         $entries = new Collection;
-
-
         // chart properties for cache:
         $cache = new CacheProperties();
         $cache->addProperty($start);
@@ -71,26 +69,19 @@ class CategoryController extends Controller
 
         while ($start <= $end) {
             $currentEnd = Navigation::endOfPeriod($start, $range);
-
-            // get the sum from $spentArray and $earnedArray:
-            $spent  = $this->getSumOfRange($start, $currentEnd, $spentArray);
-            $earned = $this->getSumOfRange($start, $currentEnd, $earnedArray);
-
-            $date = Navigation::periodShow($start, $range);
+            $spent      = $this->getSumOfRange($start, $currentEnd, $spentArray);
+            $earned     = $this->getSumOfRange($start, $currentEnd, $earnedArray);
+            $date       = Navigation::periodShow($start, $range);
             $entries->push([clone $start, $date, $spent, $earned]);
             $start = Navigation::addPeriod($start, $range, 0);
         }
-        // limit the set to the last 40:
         $entries = $entries->reverse();
         $entries = $entries->slice(0, 48);
         $entries = $entries->reverse();
-
-        $data = $this->generator->all($entries);
+        $data    = $this->generator->all($entries);
         $cache->store($data);
 
         return Response::json($data);
-
-
     }
 
 
diff --git a/app/Http/Controllers/Chart/ReportController.php b/app/Http/Controllers/Chart/ReportController.php
index 545fe46d7a..97bb03be11 100644
--- a/app/Http/Controllers/Chart/ReportController.php
+++ b/app/Http/Controllers/Chart/ReportController.php
@@ -41,6 +41,8 @@ class ReportController extends Controller
      * @param Carbon               $end
      * @param Collection           $accounts
      *
+     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
+     *
      * @return \Illuminate\Http\JsonResponse
      */
     public function yearInOut(ReportQueryInterface $query, $reportType, Carbon $start, Carbon $end, Collection $accounts)
diff --git a/app/Http/Controllers/RuleController.php b/app/Http/Controllers/RuleController.php
index 9777a8f74a..03dd0c17f3 100644
--- a/app/Http/Controllers/RuleController.php
+++ b/app/Http/Controllers/RuleController.php
@@ -337,6 +337,8 @@ class RuleController extends Controller
 
     /**
      * @param Rule $rule
+     *
+     * @return array
      */
     private function getCurrentActions(Rule $rule)
     {
diff --git a/app/Repositories/Tag/TagRepository.php b/app/Repositories/Tag/TagRepository.php
index ccdb2d9dae..f13f5bcc92 100644
--- a/app/Repositories/Tag/TagRepository.php
+++ b/app/Repositories/Tag/TagRepository.php
@@ -27,6 +27,8 @@ class TagRepository implements TagRepositoryInterface
      * @param TransactionJournal $journal
      * @param Tag                $tag
      *
+     * @SuppressWarnings(PHPMD.CyclomaticComplexity) // it's exactly 5.
+     *
      * @return boolean
      */
     public function connect(TransactionJournal $journal, Tag $tag)
diff --git a/app/Support/Amount.php b/app/Support/Amount.php
index 00a13f85bd..72bb329ad7 100644
--- a/app/Support/Amount.php
+++ b/app/Support/Amount.php
@@ -29,9 +29,9 @@ class Amount
      */
     public function formatAnything(TransactionCurrency $format, $amount, $coloured = true)
     {
-        $locale = setlocale(LC_MONETARY, 0);
-        $a      = new NumberFormatter($locale, NumberFormatter::CURRENCY);
-        $result = $a->formatCurrency($amount, $format->code);
+        $locale    = setlocale(LC_MONETARY, 0);
+        $formatter = new NumberFormatter($locale, NumberFormatter::CURRENCY);
+        $result    = $formatter->formatCurrency($amount, $format->code);
 
         if ($coloured === true) {
             if ($amount == 0) {
diff --git a/app/Validation/FireflyValidator.php b/app/Validation/FireflyValidator.php
index 728881a19d..90e65fb36a 100644
--- a/app/Validation/FireflyValidator.php
+++ b/app/Validation/FireflyValidator.php
@@ -32,6 +32,8 @@ class FireflyValidator extends Validator
      * @param array               $rules
      * @param array               $messages
      * @param array               $customAttributes
+     *
+     * @SuppressWarnings(PHPMD.ExcessiveParameterList) // inherited from Laravel.
      */
     public function __construct(TranslatorInterface $translator, array $data, array $rules, array $messages = [], array $customAttributes = [])
     {
@@ -52,8 +54,8 @@ class FireflyValidator extends Validator
         // loop all rule-triggers.
         // check if rule-value matches the thing.
         if (is_array($this->data['rule-trigger'])) {
-            $name  = isset($this->data['rule-trigger'][$index]) ? $this->data['rule-trigger'][$index] : 'invalid';
-            $value = isset($this->data['rule-trigger-value'][$index]) ? $this->data['rule-trigger-value'][$index] : false;
+            $name  = $this->getRuleTriggerName($index);
+            $value = $this->getRuleTriggerValue($index);
             switch ($name) {
                 default:
                     return true;
@@ -406,5 +408,26 @@ class FireflyValidator extends Validator
         return true;
 
     }
+
+    /**
+     * @param int $index
+     *
+     * @return string
+     */
+    private function getRuleTriggerName($index)
+    {
+        return isset($this->data['rule-trigger'][$index]) ? $this->data['rule-trigger'][$index] : 'invalid';
+
+    }
+
+    /**
+     * @param int $index
+     *
+     * @return string
+     */
+    private function getRuleTriggerValue($index)
+    {
+        return isset($this->data['rule-trigger-value'][$index]) ? $this->data['rule-trigger-value'][$index] : '';
+    }
 }