diff --git a/src/elasticsearch.rs b/src/elasticsearch.rs
index 150cbfc..17bff86 100644
--- a/src/elasticsearch.rs
+++ b/src/elasticsearch.rs
@@ -11,6 +11,7 @@ use serde_json::json;
 use serde_json::to_writer;
 use std::collections::HashMap;
 use std::fmt;
+use std::fmt::{Display, Formatter};
 use std::io::Write;
 
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -21,12 +22,12 @@ pub enum Value {
   String(String),
 }
 
-impl Value {
-  pub fn to_string(&self) -> String {
+impl Display for Value {
+  fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
     match self {
-      Value::Bool(b) => format!("{}", b),
-      Value::Int(i) => format!("{}", i),
-      Value::String(str) => str.clone(),
+      Value::Bool(b) => write!(f, "{}", b),
+      Value::Int(i) => write!(f, "{}", i),
+      Value::String(str) => write!(f, "{}", str),
     }
   }
 }
diff --git a/src/elasticsearch_test.rs b/src/elasticsearch_test.rs
index ccdd7fc..94d2462 100644
--- a/src/elasticsearch_test.rs
+++ b/src/elasticsearch_test.rs
@@ -1,4 +1,4 @@
-use super::elasticsearch::{ElasticsearchUrlBuilder, Query, QueryRequest, SortOrder};
+use super::elasticsearch::{ElasticsearchUrlBuilder, Query, QueryRequest, SortOrder, Value};
 use serde_json;
 use spectral::prelude::*;
 
@@ -102,3 +102,10 @@ fn test_build_url_delete_by_query() {
 
   assert_that(&url_builder.delete_by_query()).is_equal_to("http://server/INDEX_NAME/_delete_by_query".to_string());
 }
+
+#[test]
+fn test_value_display() {
+  assert_eq!(format!("{}", Value::Bool(true)), "true");
+  assert_eq!(format!("{}", Value::Int(1)), "1");
+  assert_eq!(format!("{}", Value::String("lol".to_owned())), "lol");
+}