diff --git a/akka-docs/rst/java/logging.rst b/akka-docs/rst/java/logging.rst
index d2ac7a1d30..4819023042 100644
--- a/akka-docs/rst/java/logging.rst
+++ b/akka-docs/rst/java/logging.rst
@@ -278,6 +278,11 @@ More fine grained log levels can be defined in the configuration of the SLF4J ba
 the ``logging-filter`` configuration property. It will filter the log events using the backend
 configuration (e.g. logback.xml) before they are published to the event bus.
 
+.. warning::
+  If you set the ``loglevel`` to a higher level than "DEBUG", any DEBUG events will be filtered
+  out already at the source and will never reach the logging backend, regardless of how the backend
+  is configured.
+
 .. code-block:: ruby
 
   akka {
diff --git a/akka-docs/rst/scala/logging.rst b/akka-docs/rst/scala/logging.rst
index c087e43264..d3dc538e96 100644
--- a/akka-docs/rst/scala/logging.rst
+++ b/akka-docs/rst/scala/logging.rst
@@ -314,6 +314,11 @@ More fine grained log levels can be defined in the configuration of the SLF4J ba
 the ``logging-filter`` configuration property. It will filter the log events using the backend
 configuration (e.g. logback.xml) before they are published to the event bus.
 
+.. warning::
+  If you set the ``loglevel`` to a higher level than "DEBUG", any DEBUG events will be filtered
+  out already at the source and will never reach the logging backend, regardless of how the backend
+  is configured.
+
 .. code-block:: ruby
 
   akka {