diff --git a/src/main/java/de/bitsharesmunich/graphenej/MarketTrade.java b/src/main/java/de/bitsharesmunich/graphenej/MarketTrade.java
index a4b45a5..c5aa841 100644
--- a/src/main/java/de/bitsharesmunich/graphenej/MarketTrade.java
+++ b/src/main/java/de/bitsharesmunich/graphenej/MarketTrade.java
@@ -1,12 +1,12 @@
-package de.bitsharesmunich.graphenej;
-
-/**
- *
- * @author henry
- */
-public class MarketTrade {
-    public String date;
-    public double price;
-    public double amount;
-    public double value;
-}
+package de.bitsharesmunich.graphenej;
+
+/**
+ *
+ * @author henry
+ */
+public class MarketTrade {
+    public String date;
+    public double price;
+    public double amount;
+    public double value;
+}
diff --git a/src/main/java/de/bitsharesmunich/graphenej/RPC.java b/src/main/java/de/bitsharesmunich/graphenej/RPC.java
index f45cd21..489fabb 100644
--- a/src/main/java/de/bitsharesmunich/graphenej/RPC.java
+++ b/src/main/java/de/bitsharesmunich/graphenej/RPC.java
@@ -20,4 +20,5 @@ public class RPC {
     public static final String CALL_LOOKUP_ASSET_SYMBOLS = "lookup_asset_symbols";
     public static final String CALL_GET_BLOCK_HEADER = "get_block_header";
     public static final String CALL_GET_LIMIT_ORDERS = "get_limit_orders";
+    public static final String GET_TRADE_HISTORY = "get_trade_history";
 }
diff --git a/src/main/java/de/bitsharesmunich/graphenej/api/GetTradeHistory.java b/src/main/java/de/bitsharesmunich/graphenej/api/GetTradeHistory.java
index 9f01c03..04d807f 100644
--- a/src/main/java/de/bitsharesmunich/graphenej/api/GetTradeHistory.java
+++ b/src/main/java/de/bitsharesmunich/graphenej/api/GetTradeHistory.java
@@ -49,7 +49,7 @@ public class GetTradeHistory extends WebSocketAdapter {
         accountParams.add(this.fromTime);
         accountParams.add(this.limit);
 
-        ApiCall getAccountByName = new ApiCall(0, "get_trade_history", accountParams, RPC.VERSION, 1);
+        ApiCall getAccountByName = new ApiCall(0, RPC.GET_TRADE_HISTORY, accountParams, RPC.VERSION, 1);
         websocket.sendText(getAccountByName.toJsonString());
     }