diff --git a/config/config.go b/config/config.go
index d9304aba5..6365e3dfc 100755
--- a/config/config.go
+++ b/config/config.go
@@ -690,6 +690,9 @@ func (self *CGRConfig) checkConfigSanity() error {
 					return fmt.Errorf("<%s> empty FieldSep for reader with ID: %s", utils.ERs, rdr.ID)
 				}
 			}
+			if rdr.Type == utils.MetaKafkajsonMap && rdr.RunDelay > 0 {
+				return fmt.Errorf("<%s> RunDelay field can not be bigger than zero for reader with ID: %s", utils.ERs, rdr.ID)
+			}
 		}
 	}
 
@@ -1463,8 +1466,8 @@ func (cfg *CGRConfig) loadConfig(path, section string) (err error) {
 	return cfg.loadConfigFromPath(path, loadFuncs)
 }
 
-func (_ *CGRConfig) loadConfigFromReader(rdr io.Reader, loadFuncs []func(jsnCfg *CgrJsonCfg) error) (err error) {
-	var jsnCfg *CgrJsonCfg = new(CgrJsonCfg)
+func (*CGRConfig) loadConfigFromReader(rdr io.Reader, loadFuncs []func(jsnCfg *CgrJsonCfg) error) (err error) {
+	jsnCfg := new(CgrJsonCfg)
 	var rjr *rjReader
 	if rjr, err = NewRjReader(rdr); err != nil {
 		return
diff --git a/ers/kafka.go b/ers/kafka.go
index 28a38b52b..a1e6a3cdf 100644
--- a/ers/kafka.go
+++ b/ers/kafka.go
@@ -36,8 +36,8 @@ import (
 )
 
 const (
-	defaultTopic   = "cgrates_cdrc"
-	defaultGroupID = "cgrates_consumer"
+	defaultTopic   = "cgrates"
+	defaultGroupID = "cgrates"
 	defaultMaxWait = time.Millisecond
 )
 
diff --git a/ers/kafka_it_test.go b/ers/kafka_it_test.go
index d346cecfd..c625a72c7 100644
--- a/ers/kafka_it_test.go
+++ b/ers/kafka_it_test.go
@@ -64,8 +64,9 @@ func TestKafkaER(t *testing.T) {
 },
 }`)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
+
 	rdrEvents = make(chan *erEvent, 1)
 	rdrErr = make(chan error, 1)
 	rdrExit = make(chan struct{}, 1)
diff --git a/general_tests/cdrs_onlexp_it_test.go b/general_tests/cdrs_onlexp_it_test.go
index 4ade74059..f720cbc08 100644
--- a/general_tests/cdrs_onlexp_it_test.go
+++ b/general_tests/cdrs_onlexp_it_test.go
@@ -487,7 +487,7 @@ func TestCDRsOnExpKafkaPosterFileFailover(t *testing.T) {
 
 	defer reader.Close()
 
-	for i := 0; i < 6; i++ {
+	for i := 0; i < 4; i++ {
 		ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
 		if m, err := reader.ReadMessage(ctx); err != nil {
 			t.Fatal(err)