diff --git a/src/main/java/org/olat/repository/ui/list/RepositoryEntryDetailsController.java b/src/main/java/org/olat/repository/ui/list/RepositoryEntryDetailsController.java
index e70792342d394a27e2cbabfefaca10c66c093a2e..9603acd11abf1cdb66d43d877cfd71c60fd6f827 100644
--- a/src/main/java/org/olat/repository/ui/list/RepositoryEntryDetailsController.java
+++ b/src/main/java/org/olat/repository/ui/list/RepositoryEntryDetailsController.java
@@ -21,7 +21,9 @@ package org.olat.repository.ui.list;
 
 import java.util.ArrayList;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import org.olat.NewControllerFactory;
 import org.olat.basesecurity.GroupRoles;
@@ -426,12 +428,16 @@ public class RepositoryEntryDetailsController extends FormBasicController {
           //add the list of owners
     		List<Identity> authors = repositoryService.getMembers(entry, GroupRoles.owner.name());
     		List<String> authorLinkNames = new ArrayList<String>(authors.size());
+    		Set<Long> duplicates = new HashSet<>(authors.size() * 2 + 1);
     		int counter = 0;
     		for(Identity author:authors) {
-    			String authorName = userManager.getUserDisplayName(author);
-    			FormLink authorLink = uifactory.addFormLink("owner-" + counter, "owner", authorName, null, formLayout, Link.NONTRANSLATED | Link.LINK);
-    			authorLink.setUserObject(author.getKey());
-    			authorLinkNames.add(authorLink.getComponent().getComponentName());
+    			if(!duplicates.contains(author.getKey())) {
+	    			String authorName = userManager.getUserDisplayName(author);
+	    			FormLink authorLink = uifactory.addFormLink("owner-" + ++counter, "owner", authorName, null, formLayout, Link.NONTRANSLATED | Link.LINK);
+	    			authorLink.setUserObject(author.getKey());
+	    			authorLinkNames.add(authorLink.getComponent().getComponentName());
+	    			duplicates.add(author.getKey());
+    			}
     		}
     		layoutCont.contextPut("authorlinknames", authorLinkNames);
 		}
diff --git a/src/main/java/org/olat/repository/ui/list/_content/details.html b/src/main/java/org/olat/repository/ui/list/_content/details.html
index 09913736a47937fd8402484999473c07fc81fc8f..54e1258e74a5ad7df14ae71d24e6b1d79da460af 100644
--- a/src/main/java/org/olat/repository/ui/list/_content/details.html
+++ b/src/main/java/org/olat/repository/ui/list/_content/details.html
@@ -118,13 +118,13 @@
 						<tr class="o_recent">					
 							<th>$r.translate("cif.lastusage"):</th>
 							<td>$r.formatDateAndTime($recentLaunch)
-						<tr>
+						</tr>
 						#end
 						#if($r.available("mark"))
 						<tr class="o_bookmark">					
 							<th>$r.translate("details.bookmark.label"):</th>
 							<td>$r.render("mark")</td>
-						<tr>
+						</tr>
 						#end
 						#if($groups && $groups.size() > 0)
 						<tr class="o_groups">					
diff --git a/src/main/java/org/olat/repository/ui/list/_content/row_1.html b/src/main/java/org/olat/repository/ui/list/_content/row_1.html
index ca7826155f639fb7f33301dec031195004eff6bf..ee840d406caa7c8a0c511afe294eb780835cee5c 100644
--- a/src/main/java/org/olat/repository/ui/list/_content/row_1.html
+++ b/src/main/java/org/olat/repository/ui/list/_content/row_1.html
@@ -1,4 +1,4 @@
-<div id="$r.getCId()" #if($row.selected) class="o_selected" #end>
+<div #if($row.selected) class="o_selected" #end>
 	<div class="o_visual">
 		#if($row.isThumbnailAvailable())
 			<img src="${row.getThumbnailRelPath()}" />