diff --git a/openvidu-client/src/main/java/io/openvidu/client/internal/ProtocolElements.java b/openvidu-client/src/main/java/io/openvidu/client/internal/ProtocolElements.java
index 8f033494..c664e8ac 100644
--- a/openvidu-client/src/main/java/io/openvidu/client/internal/ProtocolElements.java
+++ b/openvidu-client/src/main/java/io/openvidu/client/internal/ProtocolElements.java
@@ -93,6 +93,12 @@ public class ProtocolElements {
 	public static final String STREAMPROPERTYCHANGED_NEWVALUE_PARAM = "newValue";
 	public static final String STREAMPROPERTYCHANGED_REASON_PARAM = "reason";
 
+	public static final String NETWORKQUALITYCHANGED_METHOD = "networkQualityChanged";
+	public static final String NETWORKQUALITYCHANGED_CONNECTIONID_PARAM = "connectionId";
+	public static final String NETWORKQUALITYCHANGED_NEWVALUE_PARAM = "newValue";
+	public static final String NETWORKQUALITYCHANGED_OLDVALUE_PARAM = "oldValue";
+	public static final String NETWORKQUALITYCHANGED_REASON_PARAM = "reason";
+
 	public static final String FORCEDISCONNECT_METHOD = "forceDisconnect";
 	public static final String FORCEDISCONNECT_CONNECTIONID_PARAM = "connectionId";