diff --git a/node/src/main/kotlin/net/corda/node/utilities/JsonSupport.kt b/node/src/main/kotlin/net/corda/node/utilities/JsonSupport.kt
index d97d895907..4a1bf2c8b9 100644
--- a/node/src/main/kotlin/net/corda/node/utilities/JsonSupport.kt
+++ b/node/src/main/kotlin/net/corda/node/utilities/JsonSupport.kt
@@ -32,12 +32,6 @@ object JsonSupport {
         mapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY)
         mapper.enable(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS)
 
-        val timeModule = SimpleModule("java.time")
-        timeModule.addSerializer(LocalDate::class.java, ToStringSerializer)
-        timeModule.addDeserializer(LocalDate::class.java, LocalDateDeserializer)
-        timeModule.addKeyDeserializer(LocalDate::class.java, LocalDateKeyDeserializer)
-        timeModule.addSerializer(LocalDateTime::class.java, ToStringSerializer)
-
         val cordaModule = SimpleModule("core")
         cordaModule.addSerializer(Party::class.java, PartySerializer)
         cordaModule.addDeserializer(Party::class.java, PartyDeserializer)
@@ -62,12 +56,23 @@ object JsonSupport {
         cordaModule.addSerializer(NodeInfo::class.java, NodeInfoSerializer)
         cordaModule.addDeserializer(NodeInfo::class.java, NodeInfoDeserializer)
 
-        mapper.registerModule(timeModule)
+        mapper.registerModule(createJavaTimeModule())
         mapper.registerModule(cordaModule)
         mapper.registerModule(KotlinModule())
         return mapper
     }
 
+    fun createJavaTimeModule(): Module {
+        val timeModule = SimpleModule("java.time")
+        timeModule.apply {
+            addSerializer(LocalDate::class.java, ToStringSerializer)
+            addDeserializer(LocalDate::class.java, LocalDateDeserializer)
+            addKeyDeserializer(LocalDate::class.java, LocalDateKeyDeserializer)
+            addSerializer(LocalDateTime::class.java, ToStringSerializer)
+        }
+        return timeModule
+    }
+
     class ServiceHubObjectMapper(val identities: IdentityService) : ObjectMapper()
 
     object ToStringSerializer : JsonSerializer<Any>() {
diff --git a/test-utils/src/main/kotlin/net/corda/testing/http/HttpApi.kt b/test-utils/src/main/kotlin/net/corda/testing/http/HttpApi.kt
index d49dd5fdd1..00d4173535 100644
--- a/test-utils/src/main/kotlin/net/corda/testing/http/HttpApi.kt
+++ b/test-utils/src/main/kotlin/net/corda/testing/http/HttpApi.kt
@@ -23,7 +23,7 @@ class HttpApi(val root: URL) {
      */
     inline fun<reified T: Any> getJson(path: String, params: Map<String, String> = mapOf()) = HttpUtils.getJson<T>(URL(root, path), params)
 
-    private fun toJson(any: Any) = any as? String ?: ObjectMapper().writeValueAsString(any)
+    private fun toJson(any: Any) = any as? String ?: HttpUtils.createDefaultMapper().writeValueAsString(any)
 
     companion object {
         fun fromHostAndPort(hostAndPort: HostAndPort, base: String, protocol: String = "http"): HttpApi
diff --git a/test-utils/src/main/kotlin/net/corda/testing/http/HttpUtils.kt b/test-utils/src/main/kotlin/net/corda/testing/http/HttpUtils.kt
index edc06c93be..6125844465 100644
--- a/test-utils/src/main/kotlin/net/corda/testing/http/HttpUtils.kt
+++ b/test-utils/src/main/kotlin/net/corda/testing/http/HttpUtils.kt
@@ -3,6 +3,7 @@ package net.corda.testing.http
 import com.fasterxml.jackson.databind.ObjectMapper
 import com.fasterxml.jackson.module.kotlin.KotlinModule
 import net.corda.core.utilities.loggerFor
+import net.corda.node.utilities.JsonSupport
 import okhttp3.*
 import java.net.URL
 import java.util.concurrent.TimeUnit
@@ -31,7 +32,7 @@ object HttpUtils {
     inline fun<reified T: Any> getJson(url: URL, params: Map<String, String> = mapOf()) : T {
         val paramString = if(params.isEmpty()) "" else "?" + params.map { "${it.key}=${it.value}" }.joinToString("&")
         val parameterisedUrl = URL(url.toExternalForm() + paramString)
-        return ObjectMapper().registerModule(KotlinModule()).readValue(parameterisedUrl, T::class.java)
+        return createDefaultMapper().readValue(parameterisedUrl, T::class.java)
     }
 
     private fun makeRequest(request: Request): Boolean {
@@ -44,14 +45,7 @@ object HttpUtils {
         return response.isSuccessful
     }
 
-    private fun getRequest(request: Request): Pair<Boolean, String> {
-        val response = client.newCall(request).execute()
-
-        if (!response.isSuccessful) {
-            logger.error("Could not fulfill HTTP request of type ${request.method()} to ${request.url()}. Status Code: ${response.code()}. Message: ${response.body().string()}")
-            return Pair(false, "")
-        }
-
-        return Pair(true, response.body().string())
+    fun createDefaultMapper(): ObjectMapper {
+        return ObjectMapper().registerModule(JsonSupport.createJavaTimeModule()).registerModule(KotlinModule())
     }
 }