diff --git a/htdocs/admin/multicurrency.php b/htdocs/admin/multicurrency.php
index b1ad347d8b7..e09347099de 100644
--- a/htdocs/admin/multicurrency.php
+++ b/htdocs/admin/multicurrency.php
@@ -31,6 +31,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/multicurrency.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/multicurrency/class/multicurrency.class.php';
 
+
 // Translations
 $langs->load("multicurrency");
 
@@ -41,10 +42,11 @@ if (! $user->admin) {
 
 // Parameters
 $action = GETPOST('action', 'alpha');
-
 /*
  * Actions
  */
+
+
 if (preg_match('/set_(.*)/',$action,$reg))
 {
 	$code=$reg[1];
@@ -64,7 +66,7 @@ if (preg_match('/del_(.*)/',$action,$reg))
 	$code=$reg[1];
 	if (dolibarr_del_const($db, $code, 0) > 0)
 	{
-		Header("Location: ".$_SERVER["PHP_SELF"]);
+		header("Location: ".$_SERVER["PHP_SELF"]);
 		exit;
 	}
 	else
@@ -117,6 +119,21 @@ elseif ($action == 'update_currency')
 		}
 	}
 }
+elseif ($action == 'synchronize') 
+{
+	$response = GETPOST('response');
+	$response = json_decode($response);
+	
+	if ($response->success)
+	{
+		MultiCurrency::syncRates($response);	
+	}
+	else
+	{
+		setEventMessages($langs->trans('multicurrency_syncronize_error', $reponse->error->info), null, 'errors');
+	}
+}
+
 
 $TCurrency = array();
 $sql = 'SELECT rowid FROM '.MAIN_DB_PREFIX.'multicurrency WHERE entity = '.$conf->entity;
@@ -137,7 +154,6 @@ if ($resql)
  */
 
 $page_name = "MultiCurrency";
-
 llxHeader('', $langs->trans($page_name));
 
 // Subheader
@@ -217,37 +233,65 @@ print '<input type="submit" class="button" value="'.$langs->trans("Modify").'">'
 print '</form>';
 print '</td></tr>';
 
+print '</table>';
+print '<br />';
+
+$var=false;
+print '<table class="noborder" width="100%">';
+print '<tr class="liste_titre">';
+print '<td>'.$langs->trans("CurrencyLayerAccount").'</td>'."\n";
+print '<td align="center" width="20">&nbsp;</td>';
+print '<td align="right" width="100">';
+print '<form id="form_sync" action="" method="POST">';
+print '<input type="hidden" name="action" value="synchronize" />';
+print '<textarea id="response" class="hideobject" name="response"></textarea>';
+print $langs->trans("Value").'&nbsp;<input type="button" id="bt_sync" class="button" onclick="javascript:getRates();" value="'.$langs->trans('Synchronize').'" />';
+print '</form>';
+print '</td></tr>';
+
+
 $var=!$var;
 print '<tr '.$bc[$var].'>';
-print '<td>'.$langs->transnoentitiesnoconv("multicurrency_appId").'</td>';
+print '<td><a target="_blank" href="https://currencylayer.com">'.$langs->transnoentitiesnoconv("multicurrency_appId").'</a></td>';
 print '<td align="center" width="20">&nbsp;</td>';
 print '<td align="right" width="400">';
 print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'">';
 print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
-print '<input type="hidden" name="action" value="set_CURRENCY_APP_ID">';
-print '<input type="text" name="CURRENCY_APP_ID" value="'.$conf->global->MULTICURRENCY_APP_ID.'" size="28" />&nbsp;';
+print '<input type="hidden" name="action" value="set_MULTICURRENCY_APP_ID">';
+print '<input type="text" name="MULTICURRENCY_APP_ID" value="'.$conf->global->MULTICURRENCY_APP_ID.'" size="28" />&nbsp;';
 print '<input type="submit" class="button" value="'.$langs->trans("Modify").'">';
 print '</form>';
 print '</td></tr>';
 
 $var=!$var;
 print '<tr '.$bc[$var].'>';
-print '<td>'.$langs->transnoentitiesnoconv("multicurrency_currencyFromToRate").'</td>';
+print '<td>'.$langs->transnoentitiesnoconv("multicurrency_appCurrencySource").'</td>';
 print '<td align="center" width="20">&nbsp;</td>';
 print '<td align="right" width="400">';
 print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'">';
 print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
-print '<input type="hidden" name="action" value="set_MULTICURRENCY_FROM_TO_RATE">';
-print '<input type="text" name="MULTICURRENCY_FROM_TO_RATE" value="'.$conf->global->MULTICURRENCY_FROM_TO_RATE.'" size="10" placeholder="USD-EUR-1" />&nbsp;'; // CURRENCY_BASE - CURRENCY_ENTITY - ID_ENTITY
+print '<input type="hidden" name="action" value="set_MULTICURRENCY_APP_SOURCE">';
+print '<input type="text" name="MULTICURRENCY_APP_SOURCE" value="'.$conf->global->MULTICURRENCY_APP_SOURCE.'" size="10" placeholder="USD" />&nbsp;'; // Default: USD
+print '<input type="submit" class="button" value="'.$langs->trans("Modify").'">';
+print '</form>';
+print '</td></tr>';
+
+$var=!$var;
+print '<tr '.$bc[$var].'>';
+print '<td>'.$langs->transnoentitiesnoconv("multicurrency_alternateCurrencySource").'</td>';
+print '<td align="center" width="20">&nbsp;</td>';
+print '<td align="right" width="400">';
+print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'">';
+print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
+print '<input type="hidden" name="action" value="set_MULTICURRENCY_ALTERNATE_SOURCE">';
+print '<input type="text" name="MULTICURRENCY_ALTERNATE_SOURCE" value="'.$conf->global->MULTICURRENCY_ALTERNATE_SOURCE.'" size="10" placeholder="EUR" />&nbsp;'; // Example: EUR
 print '<input type="submit" class="button" value="'.$langs->trans("Modify").'">';
 print '</form>';
 print '</td></tr>';
 
 print '</table>';
-
-print '</form>';
-
 print '<br />';
+
 print '<table class="noborder" width="100%">';
 
 print '<tr class="liste_titre">';
@@ -287,6 +331,26 @@ foreach ($TCurrency as &$currency)
 
 print '</table>';
 
+
+
+print '
+	<script type="text/javascript">
+ 		function getRates()
+		{
+			$("#bt_sync").attr("disabled", true);
+			var url_sync = "http://apilayer.net/api/live?access_key='.$conf->global->MULTICURRENCY_APP_ID.'&format=1'.(!empty($conf->global->MULTICURRENCY_APP_SOURCE) ? '&source='.$conf->global->MULTICURRENCY_APP_SOURCE : '').'";
+			
+			$.ajax({
+				url: url_sync,
+				dataType: "jsonp"
+			}).done(function(response) {
+				$("#response").val(JSON.stringify(response));
+				$("#form_sync").submit();
+			});
+		}
+	</script>
+';
+
 llxFooter();
 
 $db->close();
\ No newline at end of file
diff --git a/htdocs/multicurrency/class/multicurrency.class.php b/htdocs/multicurrency/class/multicurrency.class.php
index fd6da3816ea..36c392b5930 100644
--- a/htdocs/multicurrency/class/multicurrency.class.php
+++ b/htdocs/multicurrency/class/multicurrency.class.php
@@ -208,7 +208,7 @@ class MultiCurrency extends CommonObject
 			$this->errors[] = 'Error ' . $this->db->lasterror();
 			dol_syslog('Currency::fetch ' . join(',', $this->errors), LOG_ERR);
 
-			return - 1;
+			return -1;
 		}
 	}
 
@@ -383,7 +383,7 @@ class MultiCurrency extends CommonObject
 	 * 
 	 * @param double	$rate	rate value
 	 * 
-	 * @return bool false if KO, true if OK
+	 * @return int -1 if KO, 1 if OK
 	 */
 	 public function addRate($rate)
 	 {
@@ -402,6 +402,40 @@ class MultiCurrency extends CommonObject
 		}
 	 }
 	 
+	 /**
+	  * Try get label of code in llx_currency then add rate
+	  * 
+	  * @param	string	$code	currency code
+	  * @param	double	$rate	new rate
+	  * 
+	  * @return int -1 if KO, 1 if OK, 2 if label found and OK
+	  */
+	function addRateFromDolibarr($code, $rate)
+	{
+	 	global $db, $user;
+		
+		$currency = new MultiCurrency($db);
+		$currency->code = $code;
+		$currency->name = $code;
+		
+	 	$sql = 'SELECT label FROM '.MAIN_DB_PREFIX.'c_currencies WHERE code_iso = "'.$db->escape($code).'"';
+		$resql = $db->query($sql);
+		if ($resql && ($line = $db->fetch_object($resql)))
+		{
+			$currency->name = $line->label;
+		}
+		
+		if ($currency->create($user) > 0)
+		{
+			$currency->addRate($rate);
+			
+			if (!empty($line)) return 2;
+			else return 1;
+		}
+		
+		return -1;	
+	}
+	 
 	 /**
 	 * Update rate in database 
 	 * 
@@ -520,6 +554,66 @@ class MultiCurrency extends CommonObject
 		 
 		 return false;
 	   }
+
+	/**
+	 * With free account we can't set source then recalcul all rates to force another source
+	 * 
+	 * @param	stdClass	$TRate	Object containing all currencies rates	
+	 * @return	-1 if KO, 0 if nothing, 1 if OK
+	 */
+	public static function  recalculRates(&$TRate)
+	{
+		global $conf;
+		
+		if (!empty($conf->global->MULTICURRENCY_ALTERNATE_SOURCE))
+		{
+			$alternate_source = 'USD'.$conf->global->MULTICURRENCY_ALTERNATE_SOURCE;
+			if (!empty($TRate->{$alternate_source}))
+			{
+				$coef = $TRate->USDUSD / $TRate->{$alternate_source};
+				foreach ($TRate as $attr => &$rate)
+				{
+					$rate *= $coef;
+				}
+				
+				return 1;
+			}
+			
+			return -1; // Alternate souce not found
+		}
+		
+		return 0; // Nothing to do
+	}
+	
+	/**
+	 *  Sync rates from api
+	 * 
+	 *  @param 	array 	$response 	array of reponse from api to sync dolibarr rates
+	 */
+	public static function syncRates($response)
+	{
+		global $db,$conf;
+		
+		$TRate = $response->quotes;
+		$timestamp = $response->timestamp;
+		
+		if (self::recalculRates($TRate) >= 0) 
+		{
+			foreach ($TRate as $currency_code => $rate)
+			{
+				$code = substr($currency_code, 3, 3);
+				$obj = new MultiCurrency($db);
+				if ($obj->fetch(null, $code) > 0)
+				{
+					$obj->updateRate($rate);
+				}
+				else 
+				{
+					self::addRateFromDolibarr($code, $rate);
+				}
+			}	
+		}
+	}
 }
 
 /**
@@ -713,7 +807,7 @@ class CurrencyRate extends CommonObjectLine
 		if ($error) {
 			$this->db->rollback();
 
-			return - 1 * $error;
+			return -1 * $error;
 		} else {
 			$this->db->commit();