diff --git a/http-core/src/main/scala/org/apache/pekko/http/scaladsl/model/HttpCharset.scala b/http-core/src/main/scala/org/apache/pekko/http/scaladsl/model/HttpCharset.scala
index 46967e1ed..c74ec3384 100644
--- a/http-core/src/main/scala/org/apache/pekko/http/scaladsl/model/HttpCharset.scala
+++ b/http-core/src/main/scala/org/apache/pekko/http/scaladsl/model/HttpCharset.scala
@@ -66,6 +66,19 @@ final case class HttpCharset private[http] (override val value: String)(val alia
   /** Returns the Charset for this charset if available or throws an exception otherwise */
   def nioCharset: Charset = _nioCharset.get
 
+  /**
+   * @return this HttpCharset instance if this charset can be parsed to a
+   * <code>java.nio.charset.Charset</code> instance, otherwise returns the UTF-8 charset.
+   * @since 1.1.0
+   */
+  def charsetWithUtf8Failover: HttpCharset = {
+    if (_nioCharset.isSuccess) {
+      this
+    } else {
+      HttpCharsets.`UTF-8`
+    }
+  }
+
   private def readObject(in: java.io.ObjectInputStream): Unit = {
     in.defaultReadObject()
     _nioCharset = HttpCharset.findNioCharset(value)
diff --git a/http/src/main/scala/org/apache/pekko/http/scaladsl/marshalling/PredefinedToEntityMarshallers.scala b/http/src/main/scala/org/apache/pekko/http/scaladsl/marshalling/PredefinedToEntityMarshallers.scala
index 78fdaa98d..0a5ee275d 100644
--- a/http/src/main/scala/org/apache/pekko/http/scaladsl/marshalling/PredefinedToEntityMarshallers.scala
+++ b/http/src/main/scala/org/apache/pekko/http/scaladsl/marshalling/PredefinedToEntityMarshallers.scala
@@ -14,7 +14,6 @@
 package org.apache.pekko.http.scaladsl.marshalling
 
 import java.nio.CharBuffer
-import java.nio.charset.UnsupportedCharsetException
 
 import org.apache.pekko
 import pekko.http.scaladsl.model.MediaTypes._
@@ -37,12 +36,7 @@ trait PredefinedToEntityMarshallers extends MultipartMarshallers {
     Marshaller.withOpenCharset(mediaType) { (value, charset) =>
       // https://github.com/apache/pekko-http/issues/300
       // ignore issues with invalid charset - use UTF-8 instead
-      try {
-        marshalCharArray(value, mediaType.withCharset(charset))
-      } catch {
-        case _: UnsupportedCharsetException =>
-          marshalCharArray(value, mediaType.withCharset(HttpCharsets.`UTF-8`))
-      }
+      marshalCharArray(value, mediaType.withCharset(charset.charsetWithUtf8Failover))
     }
   def charArrayMarshaller(mediaType: MediaType.WithFixedCharset): ToEntityMarshaller[Array[Char]] =
     Marshaller.withFixedContentType(mediaType) { value => marshalCharArray(value, mediaType) }
@@ -66,12 +60,7 @@ trait PredefinedToEntityMarshallers extends MultipartMarshallers {
     Marshaller.withOpenCharset(mediaType) { (s, cs) =>
       // https://github.com/apache/pekko-http/issues/300
       // ignore issues with invalid charset - use UTF-8 instead
-      try {
-        HttpEntity(mediaType.withCharset(cs), s)
-      } catch {
-        case _: UnsupportedCharsetException =>
-          HttpEntity(mediaType.withCharset(HttpCharsets.`UTF-8`), s)
-      }
+      HttpEntity(mediaType.withCharset(cs.charsetWithUtf8Failover), s)
     }
   def stringMarshaller(mediaType: MediaType.WithFixedCharset): ToEntityMarshaller[String] =
     Marshaller.withFixedContentType(mediaType) { s => HttpEntity(mediaType, s) }