diff --git a/sheriff_test.go b/sheriff_test.go
index d079e4b..f54a3ef 100644
--- a/sheriff_test.go
+++ b/sheriff_test.go
@@ -743,6 +743,20 @@ func TestMarshal_NilSlice(t *testing.T) {
 	jsonResult, err := json.Marshal(marshalSlice)
 	assert.NoError(t, err)
 
+	expect := "null"
+
+	assert.Equal(t, expect, string(jsonResult))
+}
+
+func TestMarshal_EmptySlice(t *testing.T) {
+	var stringSlice = []string{} // empty slice
+
+	marshalSlice, err := Marshal(&Options{}, stringSlice)
+	assert.NoError(t, err)
+
+	jsonResult, err := json.Marshal(marshalSlice)
+	assert.NoError(t, err)
+
 	expect := "[]"
 
 	assert.Equal(t, expect, string(jsonResult))