diff --git a/appinfo/database.xml b/appinfo/database.xml
index 4d3b7546..9db6d05e 100755
--- a/appinfo/database.xml
+++ b/appinfo/database.xml
@@ -103,6 +103,14 @@
 				<length>4</length>
 			</field>
 
+			<index>
+				<name>activity_time</name>
+				<field>
+					<name>timestamp</name>
+					<sorting>descending</sorting>
+				</field>
+			</index>
+
 			<index>
 				<name>activity_user_time</name>
 				<field>
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 92b85ac5..ba1c2436 100755
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -15,7 +15,7 @@
 	<licence>AGPL</licence>
 	<author>Frank Karlitschek, Joas Schilling</author>
 	<shipped>true</shipped>
-	<version>2.2.0</version>
+	<version>2.2.1</version>
 	<default_enable/>
 	<types>
 		<filesystem/>