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 9154e7ad932..a605c94c8bf 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
@@ -69,10 +69,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
     public static final String SUPPORT_STREAMING = "supportStreaming";
     public static final String GRADLE_PROPERTIES = "gradleProperties";
     public static final String ERROR_OBJECT_TYPE = "errorObjectType";
-    public static final String ERROR_OBJECT_SUBTYPE = "errorObjectSubtype";
-
-    public static final String MICROPROFILE_DEFAULT = "default";
-    public static final String MICROPROFILE_KUMULUZEE = "kumuluzee";
 
     public static final String FEIGN = "feign";
     public static final String GOOGLE_API_CLIENT = "google-api-client";
@@ -92,6 +88,8 @@ public class JavaClientCodegen extends AbstractJavaCodegen
     public static final String MICROPROFILE_REST_CLIENT_VERSION = "microprofileRestClientVersion";
     public static final String MICROPROFILE_REST_CLIENT_DEFAULT_VERSION = "2.0";
     public static final String MICROPROFILE_REST_CLIENT_DEFAULT_ROOT_PACKAGE = "javax";
+    public static final String MICROPROFILE_DEFAULT = "default";
+    public static final String MICROPROFILE_KUMULUZEE = "kumuluzee";
 
     public static final String SERIALIZATION_LIBRARY_GSON = "gson";
     public static final String SERIALIZATION_LIBRARY_JACKSON = "jackson";
@@ -121,7 +119,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
     protected boolean supportStreaming = false;
     protected String gradleProperties;
     protected String errorObjectType;
-    protected List<String> errorObjectSubtype;
     protected String authFolder;
     protected String serializationLibrary = null;
     protected boolean useOneOfDiscriminatorLookup = false; // use oneOf discriminator's mapping for model lookup
@@ -388,11 +385,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         }
         additionalProperties.put(ERROR_OBJECT_TYPE, errorObjectType);
 
-        if (additionalProperties.containsKey(ERROR_OBJECT_SUBTYPE)) {
-            this.setErrorObjectSubtype((List<String>) additionalProperties.get(ERROR_OBJECT_SUBTYPE));
-        }
-        additionalProperties.put(ERROR_OBJECT_SUBTYPE, errorObjectSubtype);
-
         final String invokerFolder = (sourceFolder + '/' + invokerPackage).replace(".", "/");
         final String apiFolder = (sourceFolder + '/' + apiPackage).replace(".", "/");
         final String modelsFolder = (sourceFolder + File.separator + modelPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
@@ -1078,10 +1070,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         this.errorObjectType = errorObjectType;
     }
 
-    public void setErrorObjectSubtype(final List<String> errorObjectSubtype) {
-        this.errorObjectSubtype = errorObjectSubtype;
-    }
-
     /**
      * Serialization library.
      *