diff --git a/README.md b/README.md
index d3b62ce..38c10e3 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ sbt clean compile
 ```
 #### Usage in java code
 ```
-P24API p24Api = P24API.getInstance(new P24Model.P24Credential(1, "merch_id"));
+P24API p24Api = P24API.getInstance(1, "merchPass"));
 QiwiAPI qiwiApi = QiwiAPI.getInstance("token");
 // Requires KWM backup key(!)
 WebMoneyAPI webMoneyApi = WebMoneyAPI.getInstance("wimd", "password", "/kwmPath/test.kwm");        
diff --git a/privat24/src/main/scala/com/github/unknownnpc/psw/p24/P24API.scala b/privat24/src/main/scala/com/github/unknownnpc/psw/p24/P24API.scala
index 9cf7f37..7752fc4 100644
--- a/privat24/src/main/scala/com/github/unknownnpc/psw/p24/P24API.scala
+++ b/privat24/src/main/scala/com/github/unknownnpc/psw/p24/P24API.scala
@@ -5,12 +5,12 @@ import java.util.Date
 
 import com.github.unknownnpc.psw.api.APIException
 import com.github.unknownnpc.psw.p24.action.RetrieveTransferHistoryAction
+import com.github.unknownnpc.psw.p24.model.P24Model.Merchant
 import com.github.unknownnpc.psw.p24.model.P24Model.WalletHistory._
-import com.github.unknownnpc.psw.p24.model.P24Model.{Merchant, P24Credential}
 import com.github.unknownnpc.psw.p24.serializer.P24Serializer.walletHistoryReqResSerializer
 import org.apache.http.impl.client.{CloseableHttpClient, HttpClients}
 
-private[p24] class P24API(credentials: P24Credential, httpClient: CloseableHttpClient) {
+private[p24] class P24API(merchId: Long, merchPass: String, httpClient: CloseableHttpClient) {
 
   private val p24ReqDateFormatter = new SimpleDateFormat(WalletRequestHistoryDateFormat)
 
@@ -26,8 +26,8 @@ private[p24] class P24API(credentials: P24Credential, httpClient: CloseableHttpC
   def retrieveTransferHistory(cardNum: String, from: Date, to: Date, waitVal: Long = 15): Either[APIException, WalletHistoryResponse] = {
 
     val request = WalletHistoryRequest(
-      credentials.pass,
-      Merchant(credentials.id, None),
+      merchPass,
+      Merchant(merchId, None),
       WalletHistoryRequestData(
         waitField = waitVal,
         payment =
@@ -48,9 +48,9 @@ private[p24] class P24API(credentials: P24Credential, httpClient: CloseableHttpC
 
 object P24API {
 
-  def apply(credentials: P24Credential,
-            httpClient: CloseableHttpClient = HttpClients.createDefault()): P24API = new P24API(credentials, httpClient)
+  def apply(merchId: Long, merchPass: String,
+            httpClient: CloseableHttpClient = HttpClients.createDefault()): P24API = new P24API(merchId, merchPass, httpClient)
 
-  def getInstance(credentials: P24Credential) = apply(credentials)
+  def getInstance(merchId: Long, merchPass: String) = apply(merchId, merchPass)
 
 }
diff --git a/privat24/src/main/scala/com/github/unknownnpc/psw/p24/model/P24Model.scala b/privat24/src/main/scala/com/github/unknownnpc/psw/p24/model/P24Model.scala
index bddc256..2f3a6c1 100644
--- a/privat24/src/main/scala/com/github/unknownnpc/psw/p24/model/P24Model.scala
+++ b/privat24/src/main/scala/com/github/unknownnpc/psw/p24/model/P24Model.scala
@@ -4,7 +4,6 @@ import java.util.Date
 
 private[p24] object P24Model {
 
-  case class P24Credential(id: Long, pass: String)
   case class Merchant(id: Long, signature: Option[String])
 
   object WalletHistory {
diff --git a/privat24/src/test/scala/com/github/unknownnpc/psw/p24/P24APITest.scala b/privat24/src/test/scala/com/github/unknownnpc/psw/p24/P24APITest.scala
index 8162ecc..6cf8ee5 100644
--- a/privat24/src/test/scala/com/github/unknownnpc/psw/p24/P24APITest.scala
+++ b/privat24/src/test/scala/com/github/unknownnpc/psw/p24/P24APITest.scala
@@ -2,7 +2,6 @@ package com.github.unknownnpc.psw.p24
 
 import java.util.Date
 
-import com.github.unknownnpc.psw.p24.model.P24Model.P24Credential
 import org.apache.http.client.methods.{CloseableHttpResponse, HttpPost}
 import org.apache.http.entity.StringEntity
 import org.apache.http.impl.client.CloseableHttpClient
@@ -17,8 +16,7 @@ import org.scalatestplus.mockito.MockitoSugar
 class P24APITest extends FunSpec with Matchers with MockitoSugar {
 
   private val client: CloseableHttpClient = mock[CloseableHttpClient]
-  private val credential = P24Credential(1, "pass")
-  private val p24API = P24API(credential, client)
+  private val p24API = P24API(1, "pass", client)
 
   describe("retrieveTransferHistory") {