Index: branches/5.2.x/core/kernel/db/cat_event_handler.php
===================================================================
--- branches/5.2.x/core/kernel/db/cat_event_handler.php
+++ branches/5.2.x/core/kernel/db/cat_event_handler.php
@@ -1384,6 +1384,8 @@
 					ADD INDEX (ResourceId),
 					ADD INDEX (Relevance)';
 			$this->Conn->Query($sql);
+
+			$this->Application->StoreVar('search_performed', 1);
 		}
 	}
 
Index: branches/5.2.x/core/units/categories/categories_event_handler.php
===================================================================
--- branches/5.2.x/core/units/categories/categories_event_handler.php
+++ branches/5.2.x/core/units/categories/categories_event_handler.php
@@ -2796,6 +2796,8 @@
 						ADD INDEX (ResourceId),
 						ADD INDEX (Relevance)';
 				$this->Conn->Query($sql);
+
+				$this->Application->StoreVar('search_performed', 1);
 			}
 		}