diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/translator/DtoConverters.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/translator/DtoConverters.java
index 45fecfb0dd25ea7d42c75a11ccc355dcbcb37487..ac66ef7f8046c71a00c83a8a47b86623a372da06 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/translator/DtoConverters.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/translator/DtoConverters.java
@@ -105,6 +105,7 @@ public class DtoConverters
         // BeanUtils.Converter
         //
 
+        @SuppressWarnings("unused")
         public final DataTypeCode convertToCode(final DataTypePE dataType)
         {
             return DataTypeCode.valueOf(dataType.getCode().name());
@@ -129,11 +130,13 @@ public class DtoConverters
         // BeanUtils.Converter
         //
 
+        @SuppressWarnings("unused")
         public final String convertToDescription(final VocabularyPE vocabulary)
         {
             return StringEscapeUtils.escapeHtml(vocabulary.getDescription());
         }
 
+        @SuppressWarnings("unused")
         public final List<VocabularyTerm> convertToTerms(final VocabularyPE vocabulary)
         {
             final Set<VocabularyTermPE> terms = vocabulary.getTerms();