diff --git a/go/vt/vttablet/tabletserver/planbuilder/dml.go b/go/vt/vttablet/tabletserver/planbuilder/dml.go
index c1cadcc4d73..5e67140fa72 100644
--- a/go/vt/vttablet/tabletserver/planbuilder/dml.go
+++ b/go/vt/vttablet/tabletserver/planbuilder/dml.go
@@ -323,13 +323,17 @@ func analyzeInsert(ins *sqlparser.Insert, tables map[string]*schema.Table) (plan
 	}
 	table, tableErr := plan.setTable(tableName, tables)
 
-	// In passthrough dml mode, allow the operation even if the
-	// table is unknown in the schema.
-	if PassthroughDMLs {
+	switch {
+	case tableErr == nil && table.Type == schema.Message:
+		// message inserts need to continue being strict, even in passthrough dml mode,
+		// because field defaults are set here
+
+	case PassthroughDMLs:
+		// In passthrough dml mode, allow the operation even if the
+		// table is unknown in the schema.
 		return plan, nil
-	}
 
-	if tableErr != nil {
+	case tableErr != nil:
 		return nil, tableErr
 	}
 
diff --git a/go/vt/vttablet/tabletserver/planbuilder/testdata/exec_cases.txt b/go/vt/vttablet/tabletserver/planbuilder/testdata/exec_cases.txt
index 9a60c082c79..b23e26fa529 100644
--- a/go/vt/vttablet/tabletserver/planbuilder/testdata/exec_cases.txt
+++ b/go/vt/vttablet/tabletserver/planbuilder/testdata/exec_cases.txt
@@ -974,6 +974,23 @@ options:PassthroughDMLs
   "PKValues": [[1], [2]]
 }
 
+# message insert with time_scheduled specified with PassthroughDMLs
+options:PassthroughDMLs
+"insert into msg(time_scheduled, id, message) values(1, 2, 'aa')"
+{
+  "PlanID": "INSERT_MESSAGE",
+  "TableName": "msg",
+  "Permissions": [
+    {
+      "TableName": "msg",
+      "Role": 1
+    }
+  ],
+  "FullQuery": "insert into msg(time_scheduled, id, message) values (1, 2, 'aa')",
+  "OuterQuery": "insert into msg(time_scheduled, id, message, time_next, time_created, epoch) values (1, 2, 'aa', 1, :#time_now, 0)",
+  "PKValues": [[1], [2]]
+}
+
 # message insert with no time_schedule
 "insert into msg(id, message) values(2, 'aa')"
 {
@@ -990,6 +1007,23 @@ options:PassthroughDMLs
   "PKValues": [[":#time_now"], [2]]
 }
 
+# message insert with no time_schedule with PassthroughDMLs
+options:PassthroughDMLs
+"insert into msg(id, message) values(2, 'aa')"
+{
+  "PlanID": "INSERT_MESSAGE",
+  "TableName": "msg",
+  "Permissions": [
+    {
+      "TableName": "msg",
+      "Role": 1
+    }
+  ],
+  "FullQuery": "insert into msg(id, message) values (2, 'aa')",
+  "OuterQuery": "insert into msg(id, message, time_scheduled, time_next, time_created, epoch) values (2, 'aa', :#time_now, :#time_now, :#time_now, 0)",
+  "PKValues": [[":#time_now"], [2]]
+}
+
 # message multi-value insert
 "insert into msg(time_scheduled, id, message) values(1, 2, 'aa'), (3, 4, 'bb')"
 {