diff --git a/actor/src/main/scala/org/apache/pekko/actor/ActorRefProvider.scala b/actor/src/main/scala/org/apache/pekko/actor/ActorRefProvider.scala
index 63f66b5ad7..144a8bb82f 100644
--- a/actor/src/main/scala/org/apache/pekko/actor/ActorRefProvider.scala
+++ b/actor/src/main/scala/org/apache/pekko/actor/ActorRefProvider.scala
@@ -285,7 +285,7 @@ trait ActorRefFactory {
 }
 
 /**
- * Internal Akka use only, used in implementation of system.stop(child).
+ * Internal Pekko use only, used in implementation of system.stop(child).
  */
 private[pekko] final case class StopChild(child: ActorRef)
 
diff --git a/actor/src/main/scala/org/apache/pekko/dispatch/ForkJoinExecutorConfigurator.scala b/actor/src/main/scala/org/apache/pekko/dispatch/ForkJoinExecutorConfigurator.scala
index 4637832342..cc8675b48b 100644
--- a/actor/src/main/scala/org/apache/pekko/dispatch/ForkJoinExecutorConfigurator.scala
+++ b/actor/src/main/scala/org/apache/pekko/dispatch/ForkJoinExecutorConfigurator.scala
@@ -20,7 +20,7 @@ import com.typesafe.config.Config
 object ForkJoinExecutorConfigurator {
 
   /**
-   * INTERNAL AKKA USAGE ONLY
+   * INTERNAL PEKKO USAGE ONLY
    */
   final class PekkoForkJoinPool(
       parallelism: Int,
@@ -46,7 +46,7 @@ object ForkJoinExecutorConfigurator {
   }
 
   /**
-   * INTERNAL AKKA USAGE ONLY
+   * INTERNAL PEKKO USAGE ONLY
    */
   @SerialVersionUID(1L)
   final class PekkoForkJoinTask(runnable: Runnable) extends ForkJoinTask[Unit] {
diff --git a/actor/src/main/scala/org/apache/pekko/event/Logging.scala b/actor/src/main/scala/org/apache/pekko/event/Logging.scala
index dc15b7edcd..e6e9c3fe25 100644
--- a/actor/src/main/scala/org/apache/pekko/event/Logging.scala
+++ b/actor/src/main/scala/org/apache/pekko/event/Logging.scala
@@ -105,7 +105,7 @@ trait LoggingBus extends ActorEventBus {
   }
 
   /**
-   * Internal Akka use only
+   * Internal Pekko use only
    */
   private[pekko] def startStdoutLogger(config: Settings): Unit = {
     setUpStdoutLogger(config)
@@ -113,7 +113,7 @@ trait LoggingBus extends ActorEventBus {
   }
 
   /**
-   * Internal Akka use only
+   * Internal Pekko use only
    */
   private[pekko] def startDefaultLoggers(system: ActorSystemImpl): Unit = {
     val logName = simpleName(this) + "(" + system + ")"
@@ -178,7 +178,7 @@ trait LoggingBus extends ActorEventBus {
   }
 
   /**
-   * Internal Akka use only
+   * Internal Pekko use only
    */
   private[pekko] def stopDefaultLoggers(system: ActorSystem): Unit = {
     @nowarn("msg=never used")
@@ -503,7 +503,7 @@ object Logging {
   final val DebugLevel = LogLevel(4)
 
   /**
-   * INTERNAL API: Internal Akka use only
+   * INTERNAL API: Internal Pekko use only
    *
    * Don't include the OffLevel in the AllLogLevels since we should never subscribe
    * to some kind of OffEvent.