diff --git a/includes/class.ssc_access.php b/includes/class.ssc_access.php
index 69a9029..b062304 100644
--- a/includes/class.ssc_access.php
+++ b/includes/class.ssc_access.php
@@ -37,7 +37,7 @@ function check_access(){
         if($post_groups && !$this->user_can_view_post() && !is_home() && !is_front_page()){
             $no_access_url = $this->get_no_access_redirect_url();
 
-            $url = $no_access_url ? $no_access_url : site_url();
+            $url = $no_access_url ?: site_url();
             wp_redirect($url);
             exit();
         }
diff --git a/includes/class.ssc_rest.php b/includes/class.ssc_rest.php
index 2c3c4b2..c159d08 100644
--- a/includes/class.ssc_rest.php
+++ b/includes/class.ssc_rest.php
@@ -98,7 +98,7 @@ public function create_item($request){
 
                 // Set the membership valid_to param
                 $membership = new SSC_Membership($user_id);
-                $valid_to = $request->get_param('valid_to') ? $request->get_param('valid_to') : '';
+                $valid_to = $request->get_param('valid_to') ?: '';
                 $membership->set_valid_to($group,$valid_to);
 
                 $user_groups[] = $group;
diff --git a/includes/class.ssc_settings.php b/includes/class.ssc_settings.php
index 7eef11f..18d8cec 100644
--- a/includes/class.ssc_settings.php
+++ b/includes/class.ssc_settings.php
@@ -3,6 +3,11 @@
 /**
  * CMB2 Theme Options
  * @version 0.1.0
+ *
+ * @property-read string $key
+ * @property-read string $metabox_id
+ * @property-read string $title
+ * @property-read string $options_page
  */
 class SSC_Settings{
 
@@ -11,7 +16,7 @@ class SSC_Settings{
      *
      * @var Myprefix_Admin
      */
-    protected static $instance = null;
+    protected static $instance;
 
     /**
      * Options Page title
diff --git a/includes/ssc_helpers.php b/includes/ssc_helpers.php
index 341b266..9937857 100644
--- a/includes/ssc_helpers.php
+++ b/includes/ssc_helpers.php
@@ -66,8 +66,9 @@ function ssc_list_hooks( $hook = '' ) {
  */
 function ssc_remove_anonymous_object_filter( $tag, $class, $method )
 {
-    if (!isset($GLOBALS['wp_filter'][ $tag ]) || empty($GLOBALS['wp_filter'][ $tag ]))
-        return;
+    if (!isset($GLOBALS['wp_filter'][ $tag ]) || empty($GLOBALS['wp_filter'][ $tag ])) {
+	    return null;
+    }
     
     foreach ( $GLOBALS['wp_filter'][ $tag ] as $priority => $filter )
     {