diff --git a/templates/menu.tpl b/templates/menu.tpl
index 054deec3..102fa1f2 100644
--- a/templates/menu.tpl
+++ b/templates/menu.tpl
@@ -21,7 +21,7 @@
                     <span class="icon-bar"></span>
                 </button>
                 {*** <a class="navbar-brand" href='main.php'><img id="login_header_logo" src="{$CONF.theme_logo}" alt="Logo" /></a> ***}
-                <a class="navbar-brand" href='main.php'><img id="login_header_logo" src="{$CONF.theme_logo | default('images/postbox.png')}" alt="Logo"/></a>
+                <a class="navbar-brand" href='main.php'><img id="login_header_logo" src="{$CONF.theme_logo|default:'images/postbox.png'}" alt="Logo"/></a>
             </div>
             <div id="navbar" class="collapse navbar-collapse">
                 <ul class="nav navbar-nav">