diff --git a/go/logic/migrator_test.go b/go/logic/migrator_test.go
index df6846dd9..1b258f17d 100644
--- a/go/logic/migrator_test.go
+++ b/go/logic/migrator_test.go
@@ -324,6 +324,7 @@ func TestMigrate(t *testing.T) {
 	migrationContext.HeartbeatIntervalMilliseconds = 100
 	migrationContext.ServeSocketFile = "/tmp/gh-ost.sock"
 	migrationContext.ThrottleHTTPIntervalMillis = 100
+	migrationContext.NumWorkers = 8
 
 	migrationContext.InspectorConnectionConfig = &mysql.ConnectionConfig{
 		ImpliedKey: &mysql.InstanceKey{