diff --git a/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/CaliforniumObservation.java b/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/CaliforniumObservation.java
index 7fc67804..cf12ab17 100644
--- a/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/CaliforniumObservation.java
+++ b/leshan-server-cf/src/main/java/org/eclipse/leshan/server/californium/impl/CaliforniumObservation.java
@@ -72,10 +72,11 @@ public void cancel() {
 
     @Override
     public void onResponse(Response coapResponse) {
-        if (coapResponse.getCode() == CoAP.ResponseCode.CHANGED) {
+        if (coapResponse.getCode() == CoAP.ResponseCode.CHANGED || coapResponse.getCode() == CoAP.ResponseCode.CONTENT) {
             try {
                 LwM2mNode content = LwM2mNodeDecoder.decode(coapResponse.getPayload(),
                         ContentFormat.fromCode(coapResponse.getOptions().getContentFormat()), path);
+                // TODO : response code changed or content from a LWM2M point of view?
                 ValueResponse response = new ValueResponse(ResponseCode.CHANGED, content);
 
                 for (ObservationListener listener : listeners) {