diff --git a/src/org/labkey/snd/query/AttributeDataTable.java b/src/org/labkey/snd/query/AttributeDataTable.java
index 82aa483c..03fc43cd 100644
--- a/src/org/labkey/snd/query/AttributeDataTable.java
+++ b/src/org/labkey/snd/query/AttributeDataTable.java
@@ -397,7 +397,7 @@ public int truncateRows(User user, Container container, @Nullable Map<Enum, Obje
                 truncObjProp.append("where objectId in\n");
                 truncObjProp.append("(select objectId from exp.object where objectURI like '%urn:lsid:"+ defaultLsidAuthority +":SND.EventData.Folder%')\n");
                 truncObjProp.append("and propertyId in\n");
-                truncObjProp.append("(select propertyId from exp.propertyDescriptor where PropertyURI ").append(SNDDomainKind.likeSndDomainURI(container.getRowId(), null));
+                truncObjProp.append("(select propertyId from exp.propertyDescriptor where PropertyURI ").append(SNDDomainKind.likeSndDomainURI(container.getRowId(), null).append(")"));
                 numDeletedRows = executor.execute(truncObjProp);
                 tx.commit();
             }