diff --git a/openvidu-server/src/main/java/io/openvidu/server/kurento/endpoint/MediaEndpoint.java b/openvidu-server/src/main/java/io/openvidu/server/kurento/endpoint/MediaEndpoint.java
index 767ca127..005ebc99 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/kurento/endpoint/MediaEndpoint.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/kurento/endpoint/MediaEndpoint.java
@@ -495,6 +495,7 @@ public abstract class MediaEndpoint {
 
 	public JsonObject toJson() {
 		JsonObject json = new JsonObject();
+		json.addProperty("createdAt", this.createdAt);
 		return json;
 	}