diff --git a/src/main/java/net/engio/mbassy/bus/MessagePublication.java b/src/main/java/net/engio/mbassy/bus/MessagePublication.java
index 481b4e8..2bc1a0e 100644
--- a/src/main/java/net/engio/mbassy/bus/MessagePublication.java
+++ b/src/main/java/net/engio/mbassy/bus/MessagePublication.java
@@ -99,7 +99,7 @@ public class MessagePublication implements IMessagePublication {
 
     public static class Factory {
 
-        public MessagePublication createPublication(BusRuntime runtime, Collection<Subscription> subscriptions, Object message) {
+        public IMessagePublication createPublication(BusRuntime runtime, Collection<Subscription> subscriptions, Object message) {
             return new MessagePublication(runtime, subscriptions, message, State.Initial);
         }