diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/restclient/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/restclient/ApiClient.mustache
index 8af468cfb4cf..43d97e14f196 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/restclient/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/restclient/ApiClient.mustache
@@ -87,29 +87,26 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
 
 
     public ApiClient() {
-        this.dateFormat = createDefaultDateFormat();
-        this.objectMapper = createDefaultObjectMapper(this.dateFormat);
-        this.restClient = buildRestClient(this.objectMapper);
-        this.init();
+        this(null);
     }
 
     public ApiClient(RestClient restClient) {
-        this(Optional.ofNullable(restClient).orElseGet(ApiClient::buildRestClient), createDefaultDateFormat());
+        this(restClient, createDefaultDateFormat());
     }
 
     public ApiClient(ObjectMapper mapper, DateFormat format) {
-        this(buildRestClient(mapper.copy()), format);
+        this(null, mapper, format);
     }
 
     public ApiClient(RestClient restClient, ObjectMapper mapper, DateFormat format) {
-        this(Optional.ofNullable(restClient).orElseGet(() -> buildRestClient(mapper.copy())), format);
+        this.objectMapper = mapper.copy();
+        this.restClient = Optional.ofNullable(restClient).orElseGet(() -> buildRestClient(this.objectMapper));
+        this.dateFormat = format;
+        this.init();
     }
 
     private ApiClient(RestClient restClient, DateFormat format) {
-        this.restClient = restClient;
-        this.dateFormat = format;
-        this.objectMapper = createDefaultObjectMapper(format);
-        this.init();
+        this(restClient, createDefaultObjectMapper(format), format);
     }
 
     public static DateFormat createDefaultDateFormat() {