diff --git a/htdocs/admin/multicurrency.php b/htdocs/admin/multicurrency.php
index 0c6d3e219b8..a2db56549e3 100644
--- a/htdocs/admin/multicurrency.php
+++ b/htdocs/admin/multicurrency.php
@@ -148,7 +148,10 @@ elseif ($action == 'setapilayer')
     }
     else
     {
-        MultiCurrency::syncRates($conf->global->MULTICURRENCY_APP_ID);
+        $result = MultiCurrency::syncRates($conf->global->MULTICURRENCY_APP_ID);
+        if ($result > 0) {
+        	setEventMessages($langs->trans("CurrencyRateSyncSucceed"), null, "mesgs");
+        }
     }
 }
 
diff --git a/htdocs/langs/en_US/multicurrency.lang b/htdocs/langs/en_US/multicurrency.lang
index 4dc04ff2622..bfcbd11fb7c 100644
--- a/htdocs/langs/en_US/multicurrency.lang
+++ b/htdocs/langs/en_US/multicurrency.lang
@@ -18,3 +18,5 @@ MulticurrencyReceived=Received, original currency
 MulticurrencyRemainderToTake=Remaining amount, original currency
 MulticurrencyPaymentAmount=Payment amount, original currency
 AmountToOthercurrency=Amount To (in currency of receiving account)
+CurrencyRateSyncSucceed=Currency rate synchronization done successfuly
+MULTICURRENCY_USE_CURRENCY_ON_DOCUMENT=Use the currency of the document for online payments
diff --git a/htdocs/multicurrency/class/multicurrency.class.php b/htdocs/multicurrency/class/multicurrency.class.php
index d3b589fe88a..3701d3404f0 100644
--- a/htdocs/multicurrency/class/multicurrency.class.php
+++ b/htdocs/multicurrency/class/multicurrency.class.php
@@ -628,11 +628,11 @@ class MultiCurrency extends CommonObject
 	}
 
 	/**
-	 * Sync rates from api
+	 * Sync rates from API
 	 *
 	 * @param 	string  $key                Key to use. Come from $conf->global->MULTICURRENCY_APP_ID.
 	 * @param   int     $addifnotfound      Add if not found
-     * @return  void
+     * @return  int							<0 if KO, >0 if OK
 	 */
 	public static function syncRates($key, $addifnotfound = 0)
 	{
@@ -672,11 +672,15 @@ class MultiCurrency extends CommonObject
 					}
 				}
 			}
-		}
+
+			return 1;
+        }
 		else
 		{
 		    dol_syslog("Failed to call endpoint ".$response->error->info, LOG_WARNING);
 			setEventMessages($langs->trans('multicurrency_syncronize_error', $response->error->info), null, 'errors');
+
+			return -1;
 		}
 	}