diff --git a/application/HttpUtils.php b/application/HttpUtils.php
index e8fc1f5d..a81f9056 100644
--- a/application/HttpUtils.php
+++ b/application/HttpUtils.php
@@ -122,7 +122,7 @@ function get_http_response($url, $timeout = 30, $maxBytes = 4194304)
     $content = substr($response, $headSize);
     $headers = array();
     foreach (preg_split('~[\r\n]+~', $rawHeadersLastRedir) as $line) {
-        if (empty($line) or ctype_space($line)) {
+        if (empty($line) || ctype_space($line)) {
             continue;
         }
         $splitLine = explode(': ', $line, 2);
diff --git a/application/LinkUtils.php b/application/LinkUtils.php
index cf58f808..976474de 100644
--- a/application/LinkUtils.php
+++ b/application/LinkUtils.php
@@ -89,7 +89,9 @@ function count_private($links)
 {
     $cpt = 0;
     foreach ($links as $link) {
-        $cpt = $link['private'] == true ? $cpt + 1 : $cpt;
+        if ($link['private']) {
+            $cpt += 1;
+        }
     }
 
     return $cpt;
diff --git a/application/Updater.php b/application/Updater.php
index 621c7238..704ce7ab 100644
--- a/application/Updater.php
+++ b/application/Updater.php
@@ -69,7 +69,7 @@ class Updater
             return $updatesRan;
         }
 
-        if ($this->methods == null) {
+        if ($this->methods === null) {
             throw new UpdaterException('Couldn\'t retrieve Updater class methods.');
         }
 
diff --git a/index.php b/index.php
index e553d1dd..a54dfb1d 100644
--- a/index.php
+++ b/index.php
@@ -204,7 +204,7 @@ function setup_login_state($conf)
 	}
 	// If session does not exist on server side, or IP address has changed, or session has expired, logout.
 	if (empty($_SESSION['uid'])
-        || ($conf->get('security.session_protection_disabled') == false && $_SESSION['ip'] != allIPs())
+        || ($conf->get('security.session_protection_disabled') === false && $_SESSION['ip'] != allIPs())
         || time() >= $_SESSION['expires_on'])
 	{
 	    logout();