diff --git a/core/src/main/java/io/confluent/rest/Application.java b/core/src/main/java/io/confluent/rest/Application.java
index b6d8bfd4b8..da7f636d7d 100644
--- a/core/src/main/java/io/confluent/rest/Application.java
+++ b/core/src/main/java/io/confluent/rest/Application.java
@@ -174,8 +174,7 @@ public void configureBaseApplication(Configurable<?> config) {
   public void configureBaseApplication(Configurable<?> config, Map<String, String> metricTags) {
     RestConfig restConfig = getConfiguration();
 
-    ObjectMapper jsonMapper = getJsonMapper();
-    JacksonMessageBodyProvider jsonProvider = new JacksonMessageBodyProvider(jsonMapper);
+    JacksonMessageBodyProvider jsonProvider = new JacksonMessageBodyProvider();
     config.register(jsonProvider);
     config.register(JsonParseExceptionMapper.class);
 
diff --git a/core/src/main/java/io/confluent/rest/validation/JacksonMessageBodyProvider.java b/core/src/main/java/io/confluent/rest/validation/JacksonMessageBodyProvider.java
index fc8a70b49b..50c001f3a5 100644
--- a/core/src/main/java/io/confluent/rest/validation/JacksonMessageBodyProvider.java
+++ b/core/src/main/java/io/confluent/rest/validation/JacksonMessageBodyProvider.java
@@ -15,12 +15,14 @@
  */
 package io.confluent.rest.validation;
 
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
 import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
 
 import javax.validation.ConstraintViolationException;
+import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.ext.Provider;
@@ -40,7 +42,9 @@
 public class JacksonMessageBodyProvider extends JacksonJaxbJsonProvider {
 
   public JacksonMessageBodyProvider() {
-    setMapper(new ObjectMapper());
+	ObjectMapper mapper = new ObjectMapper();
+	mapper.enable(DeserializationFeature.FAIL_ON_READING_DUP_TREE_KEY);
+    setMapper(mapper);
   }
 
   public JacksonMessageBodyProvider(ObjectMapper mapper) {