diff --git a/admin-dev/themes/default/css/admin.css b/admin-dev/themes/default/css/admin.css
index 6a8b32e7b..b62cd34b2 100644
--- a/admin-dev/themes/default/css/admin.css
+++ b/admin-dev/themes/default/css/admin.css
@@ -25,6 +25,9 @@ select[disabled="disabled"], input[disabled="disabled"],textarea[disabled="disab
 .double_select select{width:300px;height:160px;}
 .double_select a{text-align:center;display:block;border:1px solid #aaa;text-decoration:none;background-color:#fafafa;color:#123456;margin:2px;padding:2px}
 
+.icon {vertical-align:middle}
+.icon-top {vertical-align:top}
+
 /*BUTTON*/
 .button{
 	background: #e3e3e3 url('../img/bg-button-degrade.png') repeat-x scroll left top;
diff --git a/admin-dev/themes/default/template/controllers/orders/helpers/view/view.tpl b/admin-dev/themes/default/template/controllers/orders/helpers/view/view.tpl
index 8a58bf7bf..4c592b9a1 100755
--- a/admin-dev/themes/default/template/controllers/orders/helpers/view/view.tpl
+++ b/admin-dev/themes/default/template/controllers/orders/helpers/view/view.tpl
@@ -264,8 +264,8 @@
 
 				{if (!$order->valid && sizeof($currencies) > 1)}
 				<form method="post" action="{$currentIndex}&vieworder&id_order={$order->id}&token={$smarty.get.token|escape:'htmlall':'UTF-8'}">
-					<p class="warn">{l s='Don\'t forget to update your conversion rate before making this change.'}</p>
-					<label>{l s='Don\'t forget to update your conversion rate before making this change.'}</label>
+					<p class="warn">{l s='Do not forget to update your exchange rate before making this change.'}</p>
+					<label>{l s='Do not forget to update your exchange rate before making this change.'}</label>
 					<select name="new_currency">
 						{foreach from=$currencies item=currency_change}
 							{if $currency_change['id_currency'] != $order->id_currency}
diff --git a/classes/Currency.php b/classes/Currency.php
index 9264684c4..6740dd955 100644
--- a/classes/Currency.php
+++ b/classes/Currency.php
@@ -43,7 +43,7 @@ class CurrencyCore extends ObjectModel
 	/** @var int bool used for displaying blank between sign and price */
 	public $blank;
 
-	/** @var string Conversion rate from euros */
+	/** @var string exchange rate from euros */
 	public $conversion_rate;
 
 	/** @var boolean True if currency has been deleted (staying in database as deleted) */
@@ -326,23 +326,23 @@ class CurrencyCore extends ObjectModel
 	}
 
 	/**
-	 * Refresh the currency conversion rate
-	 * The XML file define conversion rate for each from a default currency ($isoCodeSource).
+	 * Refresh the currency exchange rate
+	 * The XML file define exchange rate for each from a default currency ($isoCodeSource).
 	 *
-	 * @param $data XML content which contains all the conversion rates
+	 * @param $data XML content which contains all the exchange rates
 	 * @param $isoCodeSource The default currency used in the XML file
 	 * @param $defaultCurrency The default currency object
 	 */
 	public function refreshCurrency($data, $isoCodeSource, $defaultCurrency)
 	{
-		// fetch the conversion rate of the default currency
-		$conversion_rate = 1;
+		// fetch the exchange rate of the default currency
+		$exchange_rate = 1;
 		if ($defaultCurrency->iso_code != $isoCodeSource)
 		{
 			foreach ($data->currency as $currency)
 				if ($currency['iso_code'] == $defaultCurrency->iso_code)
 				{
-					$conversion_rate = round((float)$currency['rate'], 6);
+					$exchange_rate = round((float)$currency['rate'], 6);
 					break;
 				}
 		}
@@ -364,7 +364,7 @@ class CurrencyCore extends ObjectModel
 			}
 
 			if (isset($rate))
-				$this->conversion_rate = round($rate / $conversion_rate, 6);
+				$this->conversion_rate = round($rate / $exchange_rate, 6);
 		}
 		$this->update();
 	}
diff --git a/classes/Language.php b/classes/Language.php
index 047cca8a0..2efb49528 100644
--- a/classes/Language.php
+++ b/classes/Language.php
@@ -273,7 +273,7 @@ class LanguageCore extends ObjectModel
 			'contact.html', 'contact.txt',
 			'contact_form.html', 'contact_form.txt',
 			'credit_slip.html', 'credit_slip.txt',
-			'download_product.html', 'download_product.txt', 'download-product.tpl',
+			'download_product.html', 'download_product.txt',
 			'employee_password.html', 'employee_password.txt',
 			'forward_msg.html', 'forward_msg.txt',
 			'guest_to_customer.html', 'guest_to_customer.txt',
diff --git a/classes/order/Order.php b/classes/order/Order.php
index 0cc236e96..b476cb371 100644
--- a/classes/order/Order.php
+++ b/classes/order/Order.php
@@ -63,7 +63,7 @@ class OrderCore extends ObjectModel
 	/** @var string Payment module */
 	public $module;
 
-	/** @var float Currency conversion rate */
+	/** @var float Currency exchange rate */
 	public $conversion_rate;
 
 	/** @var boolean Customer is ok for a recyclable package */
diff --git a/controllers/admin/AdminCurrenciesController.php b/controllers/admin/AdminCurrenciesController.php
index e4a7a33b6..c5d719483 100644
--- a/controllers/admin/AdminCurrenciesController.php
+++ b/controllers/admin/AdminCurrenciesController.php
@@ -38,7 +38,7 @@ class AdminCurrenciesControllerCore extends AdminController
 			'iso_code' => array('title' => $this->l('ISO code'), 'align' => 'center', 'width' => 80),
 			'iso_code_num' => array('title' => $this->l('ISO code number'), 'align' => 'center', 'width' => 120),
 			'sign' => array('title' => $this->l('Symbol'), 'width' => 20, 'align' => 'center', 'orderby' => false, 'search' => false),
-			'conversion_rate' => array('title' => $this->l('Conversion rate'), 'type' => 'float', 'align' => 'center', 'width' => 130, 'search' => false),
+			'conversion_rate' => array('title' => $this->l('Exchange rate'), 'type' => 'float', 'align' => 'center', 'width' => 130, 'search' => false),
 			'active' => array('title' => $this->l('Enabled'), 'width' => 25, 'align' => 'center', 'active' => 'status', 'type' => 'bool', 'orderby' => false),
 		);
 
@@ -130,12 +130,12 @@ class AdminCurrenciesControllerCore extends AdminController
 				),
 				array(
 					'type' => 'text',
-					'label' => $this->l('Conversion rate:'),
+					'label' => $this->l('Exchange rate:'),
 					'name' => 'conversion_rate',
 					'size' => 3,
 					'maxlength' => 11,
 					'required' => true,
-					'desc' => $this->l('Conversion rates are calculated from one unit of your shop\'s default currency. For example, if the default currency is euros and your chosen currency is dollars, type "1.20"').' 1&euro; = $1.20',
+					'desc' => $this->l('Exchange rates are calculated from one unit of your shop\'s default currency. For example, if the default currency is euros and your chosen currency is dollars, type "1.20"').' 1&euro; = $1.20',
 				),
 				array(
 					'type' => 'select',
diff --git a/controllers/admin/AdminLanguagesController.php b/controllers/admin/AdminLanguagesController.php
index b9cf3006b..2112d1fbe 100644
--- a/controllers/admin/AdminLanguagesController.php
+++ b/controllers/admin/AdminLanguagesController.php
@@ -144,7 +144,7 @@ class AdminLanguagesControllerCore extends AdminController
 					'required' => true,
 					'size' => 2,
 					'maxlength' => 5,
-					'desc' => $this->l('Full language code (e.g. EN-US, PT-BR)')
+					'desc' => $this->l('IETF language tag (e.g. en-US, pt-BR).').' '.sprintf('<a href="http://en.wikipedia.org/wiki/IETF_language_tag" target="_blank">%s <img src="../img/admin/external_link.png" class="icon-top" /></a>', $this->l('IETF on Wikipedia'))
 				),
 				array(
 					'type' => 'text',
diff --git a/controllers/admin/AdminOrdersController.php b/controllers/admin/AdminOrdersController.php
index 3d0baea97..857887689 100755
--- a/controllers/admin/AdminOrdersController.php
+++ b/controllers/admin/AdminOrdersController.php
@@ -976,7 +976,7 @@ class AdminOrdersControllerCore extends AdminController
 
 					// Update currency in order
 					$order->id_currency = $currency->id;
-					// Update conversion rate
+					// Update exchange rate
 					$order->conversion_rate = (float)$currency->conversion_rate;
 					$order->update();
 				}