diff --git a/src/main/java/org/olat/admin/user/bulkChange/GroupAddOverviewModel.java b/src/main/java/org/olat/admin/user/bulkChange/GroupAddOverviewModel.java
index 8251e6ad4e4af89115d3c3b5f88d59350d43aece..cf543e6b814e6394af171d786a83f55700ea9aa0 100644
--- a/src/main/java/org/olat/admin/user/bulkChange/GroupAddOverviewModel.java
+++ b/src/main/java/org/olat/admin/user/bulkChange/GroupAddOverviewModel.java
@@ -82,7 +82,7 @@ public class GroupAddOverviewModel extends DefaultTableDataModel<BusinessGroup>
 					return translator.translate("owner");
 				}
 			case 3: // send email
-				if (mailGroupIDs.contains(key)){
+				if (mailGroupIDs != null && mailGroupIDs.contains(key)){
 					return translator.translate("yes");
 				} else {
 					return translator.translate("no");