diff --git a/akka-http/src/main/scala/akka/http/impl/server/RequestContextImpl.scala b/akka-http/src/main/scala/akka/http/impl/server/RequestContextImpl.scala
index f15a7aaf87..294b03cfa8 100644
--- a/akka-http/src/main/scala/akka/http/impl/server/RequestContextImpl.scala
+++ b/akka-http/src/main/scala/akka/http/impl/server/RequestContextImpl.scala
@@ -4,6 +4,10 @@
 
 package akka.http.impl.server
 
+import akka.http.javadsl.model.ContentType
+import akka.http.scaladsl.model.HttpEntity
+import akka.stream.Materializer
+
 import scala.concurrent.{ ExecutionContext, Future }
 import akka.http.javadsl.{ model ⇒ jm }
 import akka.http.impl.util.JavaMapping.Implicits._
@@ -23,8 +27,11 @@ private[http] final case class RequestContextImpl(underlying: ScalaRequestContex
   def completeWith(futureResult: Future[RouteResult]): RouteResult =
     futureResult.flatMap {
       case r: RouteResultImpl ⇒ r.underlying
-    }(executionContext)
+    }(executionContext())
   def complete(text: String): RouteResult = underlying.complete(text)
+  def complete(contentType: ContentType, text: String): RouteResult =
+    underlying.complete(HttpEntity(contentType.asScala, text))
+
   def completeWithStatus(statusCode: Int): RouteResult =
     completeWithStatus(jm.StatusCodes.get(statusCode))
   def completeWithStatus(statusCode: jm.StatusCode): RouteResult =
@@ -39,5 +46,6 @@ private[http] final case class RequestContextImpl(underlying: ScalaRequestContex
 
   def notFound(): RouteResult = underlying.reject()
 
-  def executionContext: ExecutionContext = underlying.executionContext
+  def executionContext(): ExecutionContext = underlying.executionContext
+  def materializer(): Materializer = underlying.materializer
 }
diff --git a/akka-http/src/main/scala/akka/http/javadsl/server/RequestContext.scala b/akka-http/src/main/scala/akka/http/javadsl/server/RequestContext.scala
index 8c3332d511..f2836b72ff 100644
--- a/akka-http/src/main/scala/akka/http/javadsl/server/RequestContext.scala
+++ b/akka-http/src/main/scala/akka/http/javadsl/server/RequestContext.scala
@@ -5,6 +5,7 @@
 package akka.http.javadsl.server
 
 import akka.http.javadsl.model._
+import akka.stream.Materializer
 import akka.util.ByteString
 
 import scala.concurrent.{ ExecutionContext, Future }
@@ -24,6 +25,12 @@ trait RequestContext {
    */
   def unmatchedPath: String
 
+  /** Returns the ExecutionContext of this RequestContext */
+  def executionContext(): ExecutionContext
+
+  /** Returns the Materializer of this RequestContext */
+  def materializer(): Materializer
+
   /**
    * Completes the request with a value of type T and marshals it using the given
    * marshaller.
@@ -40,6 +47,11 @@ trait RequestContext {
    */
   def complete(text: String): RouteResult
 
+  /**
+   * Completes the request with the given string as an entity of the given type.
+   */
+  def complete(contentType: ContentType, text: String): RouteResult
+
   /**
    * Completes the request with the given status code and no entity.
    */
@@ -61,8 +73,5 @@ trait RequestContext {
    */
   def notFound(): RouteResult
 
-  /** Returns the ExecutionContext of this RequestContext */
-  def executionContext(): ExecutionContext
-
   // FIXME: provide proper support for rejections, see #16438
 }
\ No newline at end of file