diff --git a/ers/ers_test.go b/ers/ers_test.go
index 556558f3b..a8cad0386 100644
--- a/ers/ers_test.go
+++ b/ers/ers_test.go
@@ -21,9 +21,11 @@ package ers
 import (
 	"reflect"
 	"testing"
+	"time"
 
 	"github.com/cgrates/cgrates/config"
 	"github.com/cgrates/cgrates/engine"
+	"github.com/cgrates/cgrates/utils"
 )
 
 func TestERsNewERService(t *testing.T) {
@@ -48,5 +50,22 @@ func TestERsNewERService(t *testing.T) {
 }
 
 func TestERsAddReader(t *testing.T) {
-
+	cfg, _ := config.NewDefaultCGRConfig()
+	fltrS := &engine.FilterS{}
+	erS := NewERService(cfg, fltrS, nil, nil)
+	reader := cfg.ERsCfg().Readers[0]
+	reader.Type = utils.MetaFileCSV
+	reader.ID = "file_reader"
+	reader.RunDelay = time.Duration(0)
+	cfg.ERsCfg().Readers = append(cfg.ERsCfg().Readers, reader)
+	if len(cfg.ERsCfg().Readers) != 2 {
+		t.Errorf("Expecting: <2>, received: <%+v>", len(cfg.ERsCfg().Readers))
+	}
+	if err := erS.addReader("file_reader", 1); err != nil {
+		t.Errorf("Expecting: <nil>, received: <%+v>", len(cfg.ERsCfg().Readers))
+	} else if len(erS.rdrs) != 1 {
+		t.Errorf("Expecting: <2>, received: <%+v>", len(erS.rdrs))
+	} else if !reflect.DeepEqual(erS.rdrs["file_reader"].Config(), reader) {
+		t.Errorf("Expecting: <%+v>, received: <%+v>", reader, erS.rdrs["file_reader"].Config())
+	}
 }