diff --git a/plugins/inputs/sqlserver/azuresqldbqueries.go b/plugins/inputs/sqlserver/azuresqldbqueries.go
index bcf7bb91f..8b93e9a26 100644
--- a/plugins/inputs/sqlserver/azuresqldbqueries.go
+++ b/plugins/inputs/sqlserver/azuresqldbqueries.go
@@ -243,7 +243,7 @@ SELECT
 			WHERE type_desc = 'ROWS'
 		)
 	 END AS [available_storage_mb]
-	 ,(SELECT SUM(max_size) * 8 / (1024 * 1024) FROM sys.database_files WHERE type_desc = 'LOG') AS max_log_mb
+	 ,(SELECT SUM(CAST (max_size as BIGINT)) * 8 / (1024 * 1024) FROM sys.database_files WHERE type_desc = 'LOG') AS max_log_mb
 	,(select DATEDIFF(MINUTE,sqlserver_start_time,GETDATE()) from sys.dm_os_sys_info) as [uptime]
 	,DATABASEPROPERTYEX(DB_NAME(), 'Updateability') as replica_updateability
 FROM sys.[databases] AS d