diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
index 38fd11f04e9d..afa5d214dad1 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
@@ -816,7 +816,7 @@ public Map<String, Object> postProcessModels(Map<String, Object> objs) {
             CodegenModel cm = (CodegenModel) mo.get("model");
 
             cm.getVendorExtensions().putIfAbsent("x-implements", new ArrayList<String>());
-            if (JERSEY2_EXPERIMENTAL.equals(getLibrary())) {
+            if (JERSEY2.equals(getLibrary())) {
                 cm.getVendorExtensions().put("x-implements", new ArrayList<String>());
 
                 if (cm.oneOf != null && !cm.oneOf.isEmpty() && cm.oneOf.contains("ModelNull")) {