diff --git a/akka-docs/rst/java/code/jdocs/serialization/SerializationDocTest.java b/akka-docs/rst/java/code/jdocs/serialization/SerializationDocTest.java
index 8c71473c03..8aaecd735e 100644
--- a/akka-docs/rst/java/code/jdocs/serialization/SerializationDocTest.java
+++ b/akka-docs/rst/java/code/jdocs/serialization/SerializationDocTest.java
@@ -21,6 +21,11 @@ public class SerializationDocTest {
   //#my-own-serializer
   public class MyOwnSerializer extends JSerializer {
 
+    // If you need logging here, introduce a constructor that takes an ExtendedActorSystem.
+    // public MyOwnSerializer(ExtendedActorSystem actorSystem) 
+    // Get a logger using:
+    // private final LoggingAdapter logger = Logging.getLogger(actorSystem, this); 
+
     // This is whether "fromBinary" requires a "clazz" or not
     @Override public boolean includeManifest() {
       return false;
diff --git a/akka-docs/rst/scala/code/docs/serialization/SerializationDocSpec.scala b/akka-docs/rst/scala/code/docs/serialization/SerializationDocSpec.scala
index 85787c4eec..debb929bfc 100644
--- a/akka-docs/rst/scala/code/docs/serialization/SerializationDocSpec.scala
+++ b/akka-docs/rst/scala/code/docs/serialization/SerializationDocSpec.scala
@@ -20,6 +20,11 @@ package docs.serialization {
   //#my-own-serializer
   class MyOwnSerializer extends Serializer {
 
+    // If you need logging here, introduce a constructor that takes an ExtendedActorSystem.
+    // class MyOwnSerializer(actorSystem: ExtendedActorSystem) extends Serializer
+    // Get a logger using:
+    // private val logger = Logging(actorSystem, this)
+
     // This is whether "fromBinary" requires a "clazz" or not
     def includeManifest: Boolean = true