diff --git a/gulliver/system/class.bootstrap.php b/gulliver/system/class.bootstrap.php
index c7ebf4897..cd3f7f24a 100644
--- a/gulliver/system/class.bootstrap.php
+++ b/gulliver/system/class.bootstrap.php
@@ -2880,7 +2880,7 @@ class Bootstrap
         }
     }
 
-    public function getPasswordHashConfig()
+    public static function getPasswordHashConfig()
     {
         G::LoadClass('configuration');
         $config= new Configurations();
@@ -2901,7 +2901,7 @@ class Bootstrap
         return $passwordHashConfig;
     }
 
-    public function getPasswordHashType()
+    public static function getPasswordHashType()
     {
         $passwordHashConfig = Bootstrap::getPasswordHashConfig();
         return $passwordHashConfig['current'];
diff --git a/gulliver/system/class.g.php b/gulliver/system/class.g.php
index 23269b8a4..cd4912c53 100644
--- a/gulliver/system/class.g.php
+++ b/gulliver/system/class.g.php
@@ -36,7 +36,7 @@ class G
      * is_https
      * @return void
     */
-    public function is_https()
+    public static function is_https()
     {
         if (isset($_SERVER['HTTPS'])) {
             if ($_SERVER['HTTPS']=='on') {
diff --git a/gulliver/thirdparty/propel/adapter/DBAdapter.php b/gulliver/thirdparty/propel/adapter/DBAdapter.php
index 4f42a4486..5b07394ec 100755
--- a/gulliver/thirdparty/propel/adapter/DBAdapter.php
+++ b/gulliver/thirdparty/propel/adapter/DBAdapter.php
@@ -97,7 +97,7 @@ abstract class DBAdapter {
 	 *
 	 * @return     string The text delimeter.
 	 */
-	public function getStringDelimiter()
+	public static function getStringDelimiter()
 	{
 		return '\'';
 	}