diff --git a/database.sql b/database.sql
index 1f6545225e..0b0607e62e 100644
--- a/database.sql
+++ b/database.sql
@@ -540,7 +540,8 @@ CREATE TABLE IF NOT EXISTS `item` (
 	 INDEX `deleted_changed` (`deleted`,`changed`),
 	 INDEX `uid_wall_changed` (`uid`,`wall`,`changed`),
 	 INDEX `uid_eventid` (`uid`,`event-id`),
-	 INDEX `icid` (`icid`)
+	 INDEX `icid` (`icid`),
+	 INDEX `iaid` (`iaid`)
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Structure for all posts';
 
 --
diff --git a/src/Database/DBStructure.php b/src/Database/DBStructure.php
index e615b1bc6e..d8eb742dde 100644
--- a/src/Database/DBStructure.php
+++ b/src/Database/DBStructure.php
@@ -1247,6 +1247,7 @@ class DBStructure
 						"uid_wall_changed" => ["uid","wall","changed"],
 						"uid_eventid" => ["uid","event-id"],
 						"icid" => ["icid"],
+						"iaid" => ["iaid"],
 						]
 				];
 		$database["item-activity"] = [