diff --git a/lib/shop.lib.php b/lib/shop.lib.php
index be841ffdd..1613edafb 100644
--- a/lib/shop.lib.php
+++ b/lib/shop.lib.php
@@ -49,7 +49,7 @@ function get_it_image($img, $width=0, $height=0, $id="")
{
$str = get_image($img, $width, $height);
if ($id) {
- $str = "$str";
+ $str = ''.$str.'';
}
return $str;
}