diff --git a/map/booking_api.cpp b/map/booking_api.cpp
index 7d4e04dc9d..ec1568ab60 100644
--- a/map/booking_api.cpp
+++ b/map/booking_api.cpp
@@ -28,7 +28,7 @@ string BookingApi::GetBookingUrl(string const & baseUrl, string const & /* lang
 
 string BookingApi::GetDescriptionUrl(string const & baseUrl, string const & /* lang */) const
 {
-  return baseUrl + "?affiliate_id=" + m_affiliateId;
+  return baseUrl + "?aid=" + m_affiliateId;
 }
 
 void BookingApi::GetMinPrice(string const & hotelId, string const & currency,