The smarty version included in prestashop seems to be slightly different than the offical release. If you want to use the include instruction in a tpl file, you have to be aware of these limitations inside the instruction: you cannot concat strings you must use full path One easy way I've found to achieve this is to use the following code in your .php file: // Get the full path of the mytpl template [...] $smarty->assign('one_var', dirname(__FILE__).'/mytpl.tpl'); return $this->display(__FILE__, $this->name.'.tpl'); And the following code in your .tpl file: [...] {include file=$one_var} [...]