diff --git a/src/go/plugins/external/broker.go b/src/go/plugins/external/broker.go
index a6740bf5023..50fb01d5cf4 100644
--- a/src/go/plugins/external/broker.go
+++ b/src/go/plugins/external/broker.go
@@ -26,21 +26,21 @@ import (
 	"net"
 	"time"
 
 	"golang.zabbix.com/sdk/conf"
 	"golang.zabbix.com/sdk/errs"
 	"golang.zabbix.com/sdk/log"
 	"golang.zabbix.com/sdk/plugin"
 	"golang.zabbix.com/sdk/plugin/comms"
 )
 
-const queSize = 100
+const queSize = 1
 
 type pluginBroker struct {
 	pluginName string
 	socket     string
 	timeout    time.Duration
 	conn       net.Conn
 	requests   map[uint32]chan any
 	errx       chan error
 	log        chan any
 	// channel to handle agent->plugin requests