diff --git a/gulliver/system/class.bootstrap.php b/gulliver/system/class.bootstrap.php
index a192f0b27..547eb4ca7 100644
--- a/gulliver/system/class.bootstrap.php
+++ b/gulliver/system/class.bootstrap.php
@@ -1839,7 +1839,7 @@ class Bootstrap
      *
      * @return multitype:string mixed Ambigous <number, string>
      */
-    public function parseNormalUri($aRequestUri, array $arrayFriendlyUri = null)
+    public static function parseNormalUri($aRequestUri, array $arrayFriendlyUri = null)
     {
         if (substr($aRequestUri[1], 0, 3) == 'sys') {
             define('SYS_TEMP', substr($aRequestUri[1], 3));
diff --git a/gulliver/system/class.rbac.php b/gulliver/system/class.rbac.php
index 79dad003c..bf78948bd 100644
--- a/gulliver/system/class.rbac.php
+++ b/gulliver/system/class.rbac.php
@@ -213,7 +213,7 @@ class RBAC
      * @access public
      * @return object
      */
-    public function &getSingleton()
+    public static function &getSingleton()
     {
         if (self::$instance == null) {
             self::$instance = new RBAC();
diff --git a/thirdparty/pear/Log.php b/thirdparty/pear/Log.php
index 0e21b5eff..b6d4d2805 100644
--- a/thirdparty/pear/Log.php
+++ b/thirdparty/pear/Log.php
@@ -126,7 +126,7 @@ class Log
      * @access public
      * @since Log 1.0
      */
-    function &factory($handler, $name = '', $ident = '', $conf = array(),
+    public static function &factory($handler, $name = '', $ident = '', $conf = array(),
                       $level = PEAR_LOG_DEBUG)
     {
         $handler = strtolower($handler);
@@ -188,7 +188,7 @@ class Log
      * @access public
      * @since Log 1.0
      */
-    function &singleton($handler, $name = '', $ident = '', $conf = array(),
+    public static function &singleton($handler, $name = '', $ident = '', $conf = array(),
                         $level = PEAR_LOG_DEBUG)
     {
         static $instances;
diff --git a/workflow/engine/classes/Cases.php b/workflow/engine/classes/Cases.php
index 0718aa6bb..49da6d432 100644
--- a/workflow/engine/classes/Cases.php
+++ b/workflow/engine/classes/Cases.php
@@ -6976,7 +6976,7 @@ class Cases
         return isset($row['DEL_INDEX']) ? $row['DEL_INDEX'] : 0;
     }
 
-    public function clearCaseSessionData()
+    public static function clearCaseSessionData()
     {
         if (isset($_SESSION['APPLICATION'])) {
             unset($_SESSION['APPLICATION']);
diff --git a/workflow/engine/classes/EnterpriseClass.php b/workflow/engine/classes/EnterpriseClass.php
index 8f6bbc789..6e6a1633e 100644
--- a/workflow/engine/classes/EnterpriseClass.php
+++ b/workflow/engine/classes/EnterpriseClass.php
@@ -22,7 +22,7 @@ class EnterpriseClass extends PMPlugin
     {
     }
 
-    public function enterpriseSystemUpdate($data) //$data = $oData
+    public static function enterpriseSystemUpdate($data) //$data = $oData
     {
         if (count(glob(PATH_DATA_SITE . 'license/*.dat')) == 0) {
             return;
diff --git a/workflow/engine/classes/model/AppDelay.php b/workflow/engine/classes/model/AppDelay.php
index f8445c2e6..06d9d269c 100644
--- a/workflow/engine/classes/model/AppDelay.php
+++ b/workflow/engine/classes/model/AppDelay.php
@@ -101,7 +101,7 @@ class AppDelay extends BaseAppDelay
      *
      * @return boolean
     */
-    public function isPaused($appUid, $delIndex)
+    public static function isPaused($appUid, $delIndex)
     {
         $criteria = new Criteria('workflow');
         $criteria->add(AppDelayPeer::APP_UID, $appUid);
diff --git a/workflow/engine/classes/model/AppDelegation.php b/workflow/engine/classes/model/AppDelegation.php
index 39977faca..f6c0a5d47 100644
--- a/workflow/engine/classes/model/AppDelegation.php
+++ b/workflow/engine/classes/model/AppDelegation.php
@@ -797,7 +797,7 @@ class AppDelegation extends BaseAppDelegation
      * @param integer $index, Index to review
      * @return array
     */
-    public function getCurrentUsers($appUid, $index)
+    public static function getCurrentUsers($appUid, $index)
     {
         $oCriteria = new Criteria();
         $oCriteria->addSelectColumn(AppDelegationPeer::USR_UID);
diff --git a/workflow/engine/src/ProcessMaker/Core/System.php b/workflow/engine/src/ProcessMaker/Core/System.php
index ae37dea92..e0e469a32 100644
--- a/workflow/engine/src/ProcessMaker/Core/System.php
+++ b/workflow/engine/src/ProcessMaker/Core/System.php
@@ -1023,7 +1023,7 @@ class System
      *
      * @return array $skinListArray
      */
-    public function getSkingList()
+    public static function getSkingList()
     {
         //Create Skins custom folder if it doesn't exists
         if (!is_dir(PATH_CUSTOM_SKINS)) {
diff --git a/workflow/engine/src/ProcessMaker/Services/OAuth2/Server.php b/workflow/engine/src/ProcessMaker/Services/OAuth2/Server.php
index 28fbc6a64..35c237003 100644
--- a/workflow/engine/src/ProcessMaker/Services/OAuth2/Server.php
+++ b/workflow/engine/src/ProcessMaker/Services/OAuth2/Server.php
@@ -409,7 +409,7 @@ class Server implements iAuthenticate
         return $this->server;
     }
 
-    public function getUserId()
+    public static function getUserId()
     {
         return self::$userId;
     }