diff --git a/common/types_test.go b/common/types_test.go
index d7d310576d..1ec2bfc26c 100644
--- a/common/types_test.go
+++ b/common/types_test.go
@@ -158,8 +158,12 @@ func BenchmarkAddressHex(b *testing.B) {
 func TestRemoveItemInArray(t *testing.T) {
 	array := []Address{HexToAddress("0x0000003"), HexToAddress("0x0000001"), HexToAddress("0x0000002"), HexToAddress("0x0000003")}
 	remove := []Address{HexToAddress("0x0000002"), HexToAddress("0x0000004"), HexToAddress("0x0000003")}
-	array = RemoveItemFromArray(array, remove)
-	if len(array) != 1 {
+	newArray := RemoveItemFromArray(array, remove)
+
+	if array[0] != HexToAddress("0x0000003") || array[2] != HexToAddress("0x0000002") {
+		t.Error("should keep the original item from array address")
+	}
+	if len(newArray) != 1 {
 		t.Error("fail remove item from array address")
 	}
 }