diff --git a/src/main/java/de/extio/lmlib/client/Conversation.java b/src/main/java/de/extio/lmlib/client/Conversation.java
index 7551b66..a3957ad 100755
--- a/src/main/java/de/extio/lmlib/client/Conversation.java
+++ b/src/main/java/de/extio/lmlib/client/Conversation.java
@@ -65,7 +65,9 @@ public final class Conversation {
 	}
 	
 	public List<Turn> getConversation() {
-		return Collections.unmodifiableList(this.conversation);
+		synchronized (this.conversation) {
+			return Collections.unmodifiableList(this.conversation);
+		}
 	}
 	
 	@Override