diff --git a/src/test/java/io/json/compare/util/JsonUtilsTest.java b/src/test/java/io/json/compare/util/JsonUtilsTest.java
index 4c1fcdf..e23aca7 100644
--- a/src/test/java/io/json/compare/util/JsonUtilsTest.java
+++ b/src/test/java/io/json/compare/util/JsonUtilsTest.java
@@ -19,6 +19,12 @@ public void convertStringToJson() throws IOException {
         assertEquals(2, JsonUtils.toJson("{\"a\":2}").get("a").asInt());
     }
 
+    @Test
+    public void toJsonWithJsonNodeReturnsSameInstance() throws IOException {
+        com.fasterxml.jackson.databind.JsonNode node = JsonUtils.toJson("{\"x\":42}");
+        assertSame(node, JsonUtils.toJson(node));
+    }
+
     @Test
     public void convertObjectToJson() throws IOException {
         Map<String, Integer> map = new HashMap<>();