diff --git a/docs/api.md b/docs/api.md
index 80a2c5ed..579a7ac1 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -290,7 +290,7 @@ Example response:
 Returns balances and transactions of an address. The returned transactions are sorted by block height, newest blocks first.
 
 ```
-GET /api/v2/address/<address>[?page=<page>&pageSize=<size>&from=<block height>&to=<block height>&details=<basic|tokens|tokenBalances|txids|txs>]
+GET /api/v2/address/<address>[?page=<page>&pageSize=<size>&from=<block height>&to=<block height>&details=<basic|tokens|tokenBalances|txids|txs>&contract=<contract address>]
 ```
 
 The optional query parameters:
@@ -303,6 +303,7 @@ The optional query parameters:
     - *tokenBalances*: *basic* + tokens with balances + belonging to the address (applicable only to some coins)
     - *txids*: *tokenBalances* + list of txids, subject to  *from*, *to* filter and paging
     - *txs*:  *tokenBalances* + list of transaction with details, subject to  *from*, *to* filter and paging
+- *contract*: return only transactions which affect specified contract (applicable only to coins which support contracts)
 
 Response:
 
diff --git a/server/public.go b/server/public.go
index 5f4c1b6a..1c3de30b 100644
--- a/server/public.go
+++ b/server/public.go
@@ -641,11 +641,13 @@ func (s *PublicServer) getAddressQueryParams(r *http.Request, accountDetails api
 	if ec != nil {
 		gap = 0
 	}
+	contract := r.URL.Query().Get("contract")
 	return page, pageSize, accountDetails, &api.AddressFilter{
 		Vout:           voutFilter,
 		TokensToReturn: tokensToReturn,
 		FromHeight:     uint32(from),
 		ToHeight:       uint32(to),
+		Contract:       contract,
 	}, filterParam, gap
 }
 
@@ -670,6 +672,9 @@ func (s *PublicServer) explorerAddress(w http.ResponseWriter, r *http.Request) (
 	data.Address = address
 	data.Page = address.Page
 	data.PagingRange, data.PrevPage, data.NextPage = getPagingRange(address.Page, address.TotalPages)
+	if filterParam == "" && filter.Vout > -1 {
+		filterParam = strconv.Itoa(filter.Vout)
+	}
 	if filterParam != "" {
 		data.PageParams = template.URL("&filter=" + filterParam)
 		data.Address.Filter = filterParam
diff --git a/static/templates/address.html b/static/templates/address.html
index 05207f62..208a2b44 100644
--- a/static/templates/address.html
+++ b/static/templates/address.html
@@ -100,8 +100,8 @@
     <h3 class="col-md-3">Transactions</h3>
     <select class="col-md-2" style="background-color: #eaeaea;" onchange="self.location='?filter='+options[selectedIndex].value">
         <option>All</option>
-        <option {{if eq $addr.Filter "inputs" -}} selected{{end}} value="inputs">Inputs</option>
-        <option {{if eq $addr.Filter "outputs" -}} selected{{end}} value="outputs">Outputs</option>
+        <option {{if eq $addr.Filter "inputs" -}} selected{{end}} value="inputs">Address on input side</option>
+        <option {{if eq $addr.Filter "outputs" -}} selected{{end}} value="outputs">Address on output side</option>
         {{- if $addr.Tokens -}}
         <option {{if eq $addr.Filter "0" -}} selected{{end}} value="0">Non-contract</option>
         {{- range $t := $addr.Tokens -}}
diff --git a/static/templates/xpub.html b/static/templates/xpub.html
index 8e6255a4..6b0ec8e1 100644
--- a/static/templates/xpub.html
+++ b/static/templates/xpub.html
@@ -91,12 +91,12 @@
 {{- end}}{{if or $addr.Transactions $addr.Filter -}}
 <div class="row h-container">
     <h3 class="col-md-3">Transactions</h3>
-    <select class="col-md-2" style="background-color: #eaeaea;" onchange="self.location='?filter='+options[selectedIndex].value">
+    <select class="col-md-3" style="background-color: #eaeaea;" onchange="self.location='?filter='+options[selectedIndex].value">
         <option>All</option>
-        <option {{if eq $addr.Filter "inputs" -}} selected{{end}} value="inputs">Inputs</option>
-        <option {{if eq $addr.Filter "outputs" -}} selected{{end}} value="outputs">Outputs</option>
+        <option {{if eq $addr.Filter "inputs" -}} selected{{end}} value="inputs">XPUB addresses on input side</option>
+        <option {{if eq $addr.Filter "outputs" -}} selected{{end}} value="outputs">XPUB addresses on output side</option>
     </select>
-    <div class="col-md-7">
+    <div class="col-md-6">
         <nav>{{template "paging" $data}}</nav>
     </div>
 </div>