diff --git a/modules/openapi-generator/src/main/resources/scala-akka-client/apiInvoker.mustache b/modules/openapi-generator/src/main/resources/scala-akka-client/apiInvoker.mustache
index 0ed5b0ca230e..d27cec1e4050 100644
--- a/modules/openapi-generator/src/main/resources/scala-akka-client/apiInvoker.mustache
+++ b/modules/openapi-generator/src/main/resources/scala-akka-client/apiInvoker.mustache
@@ -174,7 +174,7 @@ class ApiInvoker(formats: Formats)(implicit system: ActorSystem) extends CustomC
   private def createRequest(uri: Uri, request: ApiRequest[_]): HttpRequest = {
     val httpRequest = request.method.toAkkaHttpMethod match {
       case m@(HttpMethods.GET | HttpMethods.DELETE) => HttpRequest(m, uri)
-      case m@(HttpMethods.POST | HttpMethods.PUT) =>
+      case m@(HttpMethods.POST | HttpMethods.PUT | HttpMethods.PATCH) =>
         formDataContent(request) orElse bodyContent(request) match {
           case Some(c: FormData) =>
             HttpRequest(m, uri, entity = c.toEntity)
diff --git a/samples/client/petstore/scala-akka/src/main/scala/org/openapitools/client/core/ApiInvoker.scala b/samples/client/petstore/scala-akka/src/main/scala/org/openapitools/client/core/ApiInvoker.scala
index 8cdb59f4c003..70c1246c979d 100644
--- a/samples/client/petstore/scala-akka/src/main/scala/org/openapitools/client/core/ApiInvoker.scala
+++ b/samples/client/petstore/scala-akka/src/main/scala/org/openapitools/client/core/ApiInvoker.scala
@@ -184,7 +184,7 @@ class ApiInvoker(formats: Formats)(implicit system: ActorSystem) extends CustomC
   private def createRequest(uri: Uri, request: ApiRequest[_]): HttpRequest = {
     val httpRequest = request.method.toAkkaHttpMethod match {
       case m@(HttpMethods.GET | HttpMethods.DELETE) => HttpRequest(m, uri)
-      case m@(HttpMethods.POST | HttpMethods.PUT) =>
+      case m@(HttpMethods.POST | HttpMethods.PUT | HttpMethods.PATCH) =>
         formDataContent(request) orElse bodyContent(request) match {
           case Some(c: FormData) =>
             HttpRequest(m, uri, entity = c.toEntity)