diff --git a/change_log.txt b/change_log.txt
index 83e93baed..1fa7427b5 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,6 +1,7 @@
 ===== 3.1.31-dev ===== (xx.xx.xx)
  20.08-2016
   - bugfix {config_load ... scope="global"} shall not throw an arror but fallback to scope="smarty" https://github.com/smarty-php/smarty/issues/274
+  - bugfix {make_nocache} failed when using composer autoloader https://github.com/smarty-php/smarty/issues/275
 
  14.08.2016
   - bugfix $smarty_>debugging = true; did E_NOTICE messages when {eval} tag was used https://github.com/smarty-php/smarty/issues/266
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 393990104..f8ccae945 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -121,7 +121,7 @@ class Smarty extends Smarty_Internal_TemplateBase
     /**
      * smarty version
      */
-    const SMARTY_VERSION = '3.1.31-dev/5';
+    const SMARTY_VERSION = '3.1.31-dev/6';
 
     /**
      * define variable scopes
diff --git a/libs/sysplugins/smarty_internal_extension_handler.php b/libs/sysplugins/smarty_internal_extension_handler.php
index bda8e82a4..9368b0e2f 100644
--- a/libs/sysplugins/smarty_internal_extension_handler.php
+++ b/libs/sysplugins/smarty_internal_extension_handler.php
@@ -67,7 +67,7 @@ public function _callExternalMethod(Smarty_Internal_Data $data, $name, $args)
         /* @var Smarty $data ->smarty */
         $smarty = isset($data->smarty) ? $data->smarty : $data;
         if (!isset($smarty->ext->$name)) {
-            $class = 'Smarty_Internal_Method_' . ucfirst($name);
+            $class = 'Smarty_Internal_Method_' . $this->upperCase($name);
             if (preg_match('/^(set|get)([A-Z].*)$/', $name, $match)) {
                 $pn = '';
                 if (!isset($this->_property_info[ $prop = $match[ 2 ] ])) {
@@ -104,6 +104,19 @@ public function _callExternalMethod(Smarty_Internal_Data $data, $name, $args)
         return call_user_func_array(array(new Smarty_Internal_Undefined(), $name), $args);
     }
 
+    /**
+     * Make first character of name parts upper case
+     *
+     * @param string $name
+     *
+     * @return string
+     */
+    public function upperCase($name) {
+        $_name = explode('_', $name);
+        $_name = array_map('ucfirst', $_name);
+        return implode('_', $_name);
+    }
+
     /**
      * set extension property
      *
@@ -129,9 +142,9 @@ public function __get($property_name)
     {
         // object properties of runtime template extensions will start with '_'
         if ($property_name[ 0 ] == '_') {
-            $class = 'Smarty_Internal_Runtime_' . ucfirst(substr($property_name, 1));
+            $class = 'Smarty_Internal_Runtime' . $this->upperCase($property_name);
         } else {
-            $class = 'Smarty_Internal_Method_' . ucfirst($property_name);
+            $class = 'Smarty_Internal_Method_' . $this->upperCase($property_name);
         }
         if (!class_exists($class)) {
             return $this->$property_name = new Smarty_Internal_Undefined($class);