diff --git a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/handler/ServerHandler.java b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/handler/ServerHandler.java
index 9911b58..2f965e1 100644
--- a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/handler/ServerHandler.java
+++ b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/handler/ServerHandler.java
@@ -55,7 +55,7 @@ public class ServerHandler {
 	public TradeResponse handleMessage(TradeRequest tradeRequest)
 	{
         TradeResponse tradeResponse;
-        List errors = new ArrayList();
+        List<?> errors = new ArrayList<Object>();
         if (creditCheckService.canExecute(tradeRequest, errors))
         {
             tradeResponse = executionVenueService.executeTradeRequest(tradeRequest);
diff --git a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/CreditCheckService.java b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/CreditCheckService.java
index 9bbaed1..116ef61 100644
--- a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/CreditCheckService.java
+++ b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/CreditCheckService.java
@@ -28,5 +28,6 @@ import org.springframework.amqp.rabbit.stocks.domain.TradeRequest;
  */
 public interface CreditCheckService {
 
-	boolean canExecute(TradeRequest tradeRequest, List errors);
+	boolean canExecute(TradeRequest tradeRequest, List<?> errors);
+
 }
diff --git a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/stubs/CreditCheckServiceStub.java b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/stubs/CreditCheckServiceStub.java
index 4507fe1..48e1b86 100644
--- a/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/stubs/CreditCheckServiceStub.java
+++ b/stocks/src/main/java/org/springframework/amqp/rabbit/stocks/service/stubs/CreditCheckServiceStub.java
@@ -28,7 +28,7 @@ import org.springframework.amqp.rabbit.stocks.service.CreditCheckService;
  */
 public class CreditCheckServiceStub implements CreditCheckService {
 
-	public boolean canExecute(TradeRequest tradeRequest, List errors) {
+	public boolean canExecute(TradeRequest tradeRequest, List<?> errors) {
 		return true;
 	}