diff --git a/install/37_collect_waiting_tasks.sql b/install/37_collect_waiting_tasks.sql
index 34b0ecf..e7564d8 100644
--- a/install/37_collect_waiting_tasks.sql
+++ b/install/37_collect_waiting_tasks.sql
@@ -163,7 +163,8 @@ BEGIN
         LEFT JOIN sys.dm_exec_requests AS der
           ON der.session_id = wt.session_id
         LEFT JOIN sys.databases AS d
-          ON d.database_id = der.database_id
+          ON  d.database_id = der.database_id
+          AND d.state = 0 /*ONLINE only — skip RESTORING databases (mirroring/AG secondary)*/
         OUTER APPLY sys.dm_exec_sql_text(der.sql_handle) AS dest
         OUTER APPLY sys.dm_exec_text_query_plan
         (