diff --git a/server-application-server/source/java/ch/ethz/sis/openbis/generic/server/asapi/v3/translator/sample/SampleQuery.java b/server-application-server/source/java/ch/ethz/sis/openbis/generic/server/asapi/v3/translator/sample/SampleQuery.java
index abc5890fe56c8a328c19fc5e0ef55e2f1aa426a7..736575e22cc2c7e102e7eb9633a35a6e775c1af1 100644
--- a/server-application-server/source/java/ch/ethz/sis/openbis/generic/server/asapi/v3/translator/sample/SampleQuery.java
+++ b/server-application-server/source/java/ch/ethz/sis/openbis/generic/server/asapi/v3/translator/sample/SampleQuery.java
@@ -24,9 +24,7 @@ import ch.ethz.sis.openbis.generic.server.asapi.v3.translator.property.MaterialP
 import ch.ethz.sis.openbis.generic.server.asapi.v3.translator.property.PropertyAssignmentRecord;
 import ch.ethz.sis.openbis.generic.server.asapi.v3.translator.property.PropertyRecord;
 import ch.ethz.sis.openbis.generic.server.asapi.v3.translator.property.SamplePropertyRecord;
-import ch.systemsx.cisd.common.db.mapper.LongArrayMapper;
 import ch.systemsx.cisd.common.db.mapper.LongSetMapper;
-import ch.systemsx.cisd.common.db.mapper.StringMapMapper;
 import ch.systemsx.cisd.openbis.generic.server.business.bo.common.HistoryPropertyRecordDataObjectBinding;
 import ch.systemsx.cisd.openbis.generic.server.business.bo.common.PropertyRecordDataObjectBinding;
 import it.unimi.dsi.fastutil.longs.LongSet;