diff --git a/libraries/wallet/include/graphene/wallet/wallet.hpp b/libraries/wallet/include/graphene/wallet/wallet.hpp
index 591394d0..aaa93e0e 100644
--- a/libraries/wallet/include/graphene/wallet/wallet.hpp
+++ b/libraries/wallet/include/graphene/wallet/wallet.hpp
@@ -357,7 +357,7 @@ class wallet_api
       vector<operation_detail>  get_account_history(string name, int limit)const;
 
 
-      vector<bucket_object>             get_market_history(string symbol, string symbol2, uint32_t bucket)const;
+      vector<bucket_object>             get_market_history(string symbol, string symbol2, uint32_t bucket, fc::time_point_sec start, fc::time_point_sec end)const;
       vector<limit_order_object>        get_limit_orders(string a, string b, uint32_t limit)const;
       vector<call_order_object>         get_call_orders(string a, uint32_t limit)const;
       vector<force_settlement_object>   get_settle_orders(string a, uint32_t limit)const;