diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/descriptiontemplatedefinition/DefinitionPersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/descriptiontemplatedefinition/DefinitionPersist.java
index d30d46068..84f25187d 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/descriptiontemplatedefinition/DefinitionPersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/descriptiontemplatedefinition/DefinitionPersist.java
@@ -71,7 +71,7 @@ public class DefinitionPersist {
                             .iff(() -> !this.isNull(item.getSections()))
                             .on(DefinitionPersist._sections)
                             .over(item.getSections())
-                            .using(() -> this.validatorFactory.validator(SectionPersist.SectionPersistValidator.class)),
+                            .using((itm) -> this.validatorFactory.validator(SectionPersist.SectionPersistValidator.class)),
                     this.spec()
                             .must(() -> !this.isNull(item.getPages()))
                             .failOn(DefinitionPersist._pages).failWith(messageSource.getMessage("Validation_Required", new Object[]{DefinitionPersist._pages}, LocaleContextHolder.getLocale())),
@@ -79,7 +79,7 @@ public class DefinitionPersist {
                             .iff(() -> !this.isNull(item.getPages()))
                             .on(DefinitionPersist._pages)
                             .over(item.getPages())
-                            .using(() -> this.validatorFactory.validator(PagePersist.PagePersistValidator.class))
+                            .using((itm) -> this.validatorFactory.validator(PagePersist.PagePersistValidator.class))
             );
         }
     }