diff --git a/nio-server/conf/application.conf b/nio-server/conf/application.conf
index 06e1edc..ef6a7b7 100644
--- a/nio-server/conf/application.conf
+++ b/nio-server/conf/application.conf
@@ -6,7 +6,7 @@ play.application.loader = loader.NioLoader
 // add filter NioFilter
 play.modules.enabled += "play.modules.reactivemongo.ReactiveMongoModule"
 
-play.server.provider = "play.core.server.NettyServerProvider"
+play.server.provider = play.core.server.NettyServerProvider
 
 play {
   filters {
diff --git a/nio-server/test/controllers/HomeControllerSpec.scala b/nio-server/test/controllers/HomeControllerSpec.scala
index c915668..e9f84a6 100644
--- a/nio-server/test/controllers/HomeControllerSpec.scala
+++ b/nio-server/test/controllers/HomeControllerSpec.scala
@@ -20,7 +20,7 @@ class HomeControllerSpec extends TestUtils {
         callJson(s"/$tenant/bo", GET, api = false)
 
       response.status must be(OK)
-      response.contentType must be("text/html; charset=UTF-8")
+      response.contentType.toLowerCase must be("text/html; charset=utf-8")
     }
 
   }
diff --git a/nio-server/test/controllers/TenantControllerSpec.scala b/nio-server/test/controllers/TenantControllerSpec.scala
index 826e601..e809f17 100644
--- a/nio-server/test/controllers/TenantControllerSpec.scala
+++ b/nio-server/test/controllers/TenantControllerSpec.scala
@@ -100,7 +100,7 @@ class TenantControllerSpec extends TestUtils {
         postXml(path, tenantXml, headers = Seq(CONTENT_TYPE -> XML, secret))
 
       resp.status mustBe CREATED
-      resp.contentType mustBe s"$XML; charset=UTF-8"
+      resp.contentType.toLowerCase mustBe s"$XML; charset=utf-8"
     }
 
     "create with content-type json" in {