diff --git a/db/zm_update-1.31.16.sql b/db/zm_update-1.31.16.sql
index 3d85fb60d..eedd60119 100644
--- a/db/zm_update-1.31.16.sql
+++ b/db/zm_update-1.31.16.sql
@@ -77,7 +77,7 @@ SET @s = (SELECT IF(
      AND table_name = 'Groups'
      AND column_name = 'MonitorIds'
     ) > 0,
-    "REPLACE INTO Groups_Monitors (GroupId,MonitorId) SELECT Id,SUBSTRING_INDEX(SUBSTRING_INDEX(t.MonitorIds, ',', n.n), ',', -1) value   FROM Groups t CROSS JOIN  (    SELECT a.N + b.N * 10 + 1 n      FROM      (SELECT 0 AS N UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) a    ,(SELECT 0 AS N UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) b     ORDER BY n ) n  WHERE n.n <= 1 + (LENGTH(t.MonitorIds) - LENGTH(REPLACE(t.MonitorIds, ',', '')))  ORDER BY value;",
+    "REPLACE INTO Groups_Monitors (GroupId,MonitorId) SELECT Id,SUBSTRING_INDEX(SUBSTRING_INDEX(t.MonitorIds, ',', n.n), ',', -1) value   FROM Groups t CROSS JOIN  (    SELECT a.N + b.N * 10 + 1 n      FROM      (SELECT 0 AS N UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) a    ,(SELECT 0 AS N UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) b     ORDER BY n ) n  WHERE t.MonitorIds != '' AND n.n <= 1 + (LENGTH(t.MonitorIds) - LENGTH(REPLACE(t.MonitorIds, ',', '')))  ORDER BY value;",
     "SELECT 'MonitorIds has already been removed.'"
 ));