diff --git a/src/php-gettext/gettext.inc b/src/php-gettext/gettext.inc
index 399a0f2..b61cbce 100644
--- a/src/php-gettext/gettext.inc
+++ b/src/php-gettext/gettext.inc
@@ -89,18 +89,18 @@ function get_list_of_locales($locale) {
       if ($modifier) {
         if ($country) {
           if ($charset)
-            array_push($locale_names, "${lang}_$country.$charset@$modifier");
-          array_push($locale_names, "${lang}_$country@$modifier");
+            array_push($locale_names, "{$lang}_$country.$charset@$modifier");
+          array_push($locale_names, "{$lang}_$country@$modifier");
         } elseif ($charset)
-            array_push($locale_names, "${lang}.$charset@$modifier");
+            array_push($locale_names, "{$lang}.$charset@$modifier");
         array_push($locale_names, "$lang@$modifier");
       }
       if ($country) {
         if ($charset)
-          array_push($locale_names, "${lang}_$country.$charset");
-        array_push($locale_names, "${lang}_$country");
+          array_push($locale_names, "{$lang}_$country.$charset");
+        array_push($locale_names, "{$lang}_$country");
       } elseif ($charset)
-          array_push($locale_names, "${lang}.$charset");
+          array_push($locale_names, "{$lang}.$charset");
       array_push($locale_names, $lang);
     }