diff --git a/application/controllers/EventRuleController.php b/application/controllers/EventRuleController.php
index a72387782..7d46364f2 100644
--- a/application/controllers/EventRuleController.php
+++ b/application/controllers/EventRuleController.php
@@ -134,11 +134,12 @@ public function indexAction(): void
         $buttonsWrapper->add([$eventRuleConfigSubmitButton, $discardChangesButton, $deleteButton]);
 
         if ($ruleId > 0) {
-            $incidents = Incident::on(Database::get())
+            $incidentCount = Incident::on(Database::get())
                 ->with('rule')
-                ->filter(Filter::equal('rule.id', $ruleId));
+                ->filter(Filter::equal('rule.id', $ruleId))
+                ->count();
 
-            if ($incidents->count() > 0) {
+            if ($incidentCount) {
                 $deleteButton->addAttributes([
                     'disabled' => true,
                     'title'    => t('There exist active incidents for this escalation and hence cannot be removed')
diff --git a/application/forms/EventRuleConfigElements/EscalationRecipient.php b/application/forms/EventRuleConfigElements/EscalationRecipient.php
index 46e9d2a3d..f0085a173 100644
--- a/application/forms/EventRuleConfigElements/EscalationRecipient.php
+++ b/application/forms/EventRuleConfigElements/EscalationRecipient.php
@@ -46,7 +46,9 @@ protected function assemble(): void
             $this->getElement('recipient-count')->setValue(++$recipientCount);
         }
 
+        $defaultOption = ['' => sprintf(' - %s - ', $this->translate('Please choose'))];
         $removePosition = null;
+
         foreach (range(1, $recipientCount) as $i) {
             $this->addElement('hidden', 'id_' . $i);
 
@@ -55,9 +57,7 @@ protected function assemble(): void
                 'column_' . $i,
                 [
                     'class'           => ['autosubmit', 'left-operand'],
-                    'options'         => [
-                            '' => sprintf(' - %s - ', $this->translate('Please choose'))
-                        ] + $this->fetchOptions(),
+                    'options'         => $defaultOption + $this->fetchOptions(),
                     'disabledOptions' => [''],
                     'required'        => true,
                     'value'           => $this->getPopulatedValue('column_' . $i)
@@ -66,8 +66,7 @@ protected function assemble(): void
 
             $this->registerElement($col);
 
-            $options = ['' => sprintf(' - %s - ', $this->translate('Please choose'))];
-            $options += Channel::fetchChannelNames(Database::get());
+            $options = $defaultOption + Channel::fetchChannelNames(Database::get());
 
             $val = $this->createElement(
                 'select',
diff --git a/application/forms/EventRuleConfigForm.php b/application/forms/EventRuleConfigForm.php
index 53b895141..251236845 100644
--- a/application/forms/EventRuleConfigForm.php
+++ b/application/forms/EventRuleConfigForm.php
@@ -270,8 +270,7 @@ public function populate($values): self
         foreach ($values['rule_escalation'] as $position => $escalation) {
             $conditions = explode('|', $escalation['condition'] ?? '');
             $conditionFormValues = [];
-            $conditionCount = count($conditions);
-            $conditionFormValues['condition-count'] = $conditionCount;
+            $conditionFormValues['condition-count'] = count($conditions);
             $conditionFormValues['id'] = $escalation['id'] ?? bin2hex(random_bytes(4));
 
             foreach ($conditions as $key => $condition) {
@@ -381,11 +380,12 @@ protected function createRemoveButton(string $prefix): SubmitButtonElement
         $escalationId = $escalations[$pos]['id'] ?? null;
 
         if ($escalationId && ctype_digit($escalationId)) {
-            $incident = Incident::on(Database::get())->with('rule_escalation');
-            $incident->filter(Filter::equal('rule_escalation.id', $escalationId));
-            if ($incident->count() > 0) {
-                $disableRemoveButton = true;
-            }
+            $incidentCount = Incident::on(Database::get())
+                ->with('rule_escalation')
+                ->filter(Filter::equal('rule_escalation.id', $escalationId))
+                ->count();
+
+            $disableRemoveButton = $incidentCount > 0;
         }
 
         $button = new SubmitButtonElement(
@@ -639,7 +639,7 @@ protected function getPrefixesMap(int $escalationCount): string
     {
         $prefixesMap = [];
         for ($i = 1; $i <= $escalationCount; $i++) {
-            $prefixesMap[(string) $i] = bin2hex((string) $i);
+            $prefixesMap[] = bin2hex((string) $i);
         }
 
         return implode(',', $prefixesMap);