diff --git a/mysql-test/main/opt_trace.test b/mysql-test/main/opt_trace.test

index 2077422fa1b..a516c2891a2 100644

--- a/mysql-test/main/opt_trace.test

+++ b/mysql-test/main/opt_trace.test

@@ -48,12 +48,14 @@ create view v1 as select a from t1 group by b;

 create view v2 as select a from t2;

 --echo # Mergeable view

+--disable_ps_protocol

 --optimizer_trace

 explain select * from v2 ;

 --echo # Non-Mergeable view

 --optimizer_trace

 explain select * from v1 ;

+--enable_ps_protocol

 drop table t1,t2;

 drop view v1,v2;