diff --git a/go/vt/vttest/vtprocess.go b/go/vt/vttest/vtprocess.go
index <HASH>..<HASH> 100644
--- a/go/vt/vttest/vtprocess.go
+++ b/go/vt/vttest/vtprocess.go
@@ -221,6 +221,7 @@ func VtcomboProcess(env Environment, args *Config, mysql MySQLManager) *VtProces
 		"-mycnf_server_id", "1",
 		"-mycnf_socket_file", socket,
 		"-normalize_queries",
+		"-enable_query_plan_field_caching=false",
 	}...)
 
 	vt.ExtraArgs = append(vt.ExtraArgs, QueryServerArgs...)
disable field caching in vttestserver