diff --git a/navalplanner-webapp/src/main/webapp/resources/search/worker_search.zul b/navalplanner-webapp/src/main/webapp/resources/search/worker_search.zul
index 5e347c10a..32008eec5 100644
--- a/navalplanner-webapp/src/main/webapp/resources/search/worker_search.zul
+++ b/navalplanner-webapp/src/main/webapp/resources/search/worker_search.zul
@@ -22,7 +22,7 @@
 		<vbox>
 			<!--Matchings -->
 			<listbox id="listBoxWorkers" width="200px" mold="paging"
-				pageSize="10" rows="10"
+				pageSize="10" rows="10" multiple="true"
 				itemRenderer="@{controller.listitemRenderer}">
 				<listhead>
 					<listheader label="${i18n:_('Found workers')}"