diff --git a/jaxrs-tck/src/main/java/ee/jakarta/tck/ws/rs/ee/rs/core/headers/JAXRSClientIT.java b/jaxrs-tck/src/main/java/ee/jakarta/tck/ws/rs/ee/rs/core/headers/JAXRSClientIT.java
index bf016ef..5b3cc4d 100644
--- a/jaxrs-tck/src/main/java/ee/jakarta/tck/ws/rs/ee/rs/core/headers/JAXRSClientIT.java
+++ b/jaxrs-tck/src/main/java/ee/jakarta/tck/ws/rs/ee/rs/core/headers/JAXRSClientIT.java
@@ -140,7 +140,7 @@
   public void contentLanguageTest() throws Fault {
     setProperty(Property.REQUEST_HEADERS,
         buildAccept(MediaType.TEXT_PLAIN_TYPE));
-    Variant variant = new Variant(MediaType.WILDCARD_TYPE, "en-US", null);
+    Variant variant = new Variant(MediaType.WILDCARD_TYPE, "en", "US", null);
     Entity<String> entity = Entity.entity("anything", variant);
     setRequestContentEntity(entity);
     setProperty(Property.REQUEST, buildRequest(Request.PUT, ""));