diff --git a/src/main/resources/META-INF/orm.xml b/src/main/resources/META-INF/orm.xml
index 96d359bd..1f6739bc 100644
--- a/src/main/resources/META-INF/orm.xml
+++ b/src/main/resources/META-INF/orm.xml
@@ -6,7 +6,7 @@
         http://java.sun.com/xml/ns/persistence/orm_2_0.xsd">
 
 	<named-query name="Entry.byGuids">
-		<query>select e from FeedEntry e where e.guid in :guids order by e.updated desc</query>
+		<query>select e from FeedEntry e where e.guid in (:guids) order by e.updated desc</query>
 	</named-query>
 	<named-query name="Entry.unreadByFeed">
 		<query>select e from FeedEntry e where e.feed=:feed and not exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true) order by e.updated desc</query>
@@ -16,9 +16,9 @@
 	</named-query>
 	
 	<named-query name="Entry.unreadByCategories">
-		<query>select e from FeedEntry e where exists (select s from FeedSubscription s where s.user=:user and s.feed = e.feed and s.category in :categories) and not exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true) order by e.updated desc</query>
+		<query>select e from FeedEntry e where exists (select s from FeedSubscription s where s.user=:user and s.feed = e.feed and s.category in (:categories) ) and not exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true) order by e.updated desc</query>
 	</named-query>
 	<named-query name="Entry.readByCategories">
-		<query>select e from FeedEntry e where exists (select s from FeedSubscription s where s.user=:user and s.feed = e.feed and s.category in :categories) and exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true) order by e.updated desc</query>
+		<query>select e from FeedEntry e where exists (select s from FeedSubscription s where s.user=:user and s.feed = e.feed and s.category in (:categories) ) and exists (select s from FeedEntryStatus s where s.entry = e and s.user =:user and s.read=true) order by e.updated desc</query>
 	</named-query>
 </entity-mappings>
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