diff --git a/src/test/java/net/openhft/chronicle/map/Builder.java b/src/test/java/net/openhft/chronicle/map/Builder.java
index 5ebdc6661..aee3866a3 100644
--- a/src/test/java/net/openhft/chronicle/map/Builder.java
+++ b/src/test/java/net/openhft/chronicle/map/Builder.java
@@ -20,6 +20,7 @@ package net.openhft.chronicle.map;
 
 import net.openhft.chronicle.hash.replication.TcpTransportAndNetworkConfig;
 import net.openhft.chronicle.hash.serialization.internal.DummyValue;
+import net.openhft.chronicle.hash.serialization.internal.DummyValueMarshaller;
 
 import java.io.File;
 import java.io.IOException;
@@ -64,7 +65,9 @@ public class Builder {
             final int serverPort,
             final InetSocketAddress... endpoints) throws IOException {
         return (T) newTcpSocketShmBuilder(Integer.class, DummyValue.class,
-                identifier, serverPort, endpoints).create();
+                identifier, serverPort, endpoints)
+                .valueMarshallers(DummyValueMarshaller.INSTANCE, DummyValueMarshaller.INSTANCE)
+                .valueSizeMarshaller(DummyValueMarshaller.INSTANCE).create();
     }
 
     public static <K, V> ChronicleMapBuilder<K, V> newTcpSocketShmBuilder(
diff --git a/src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java b/src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java
index 36a9db4d3..57b0c61b6 100644
--- a/src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java
+++ b/src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java
@@ -414,7 +414,8 @@ public class CHMUseCasesTest {
         Arrays.fill(expected, 'X');
 
         ChronicleMapBuilder<CharSequence, char[]> builder = ChronicleMapBuilder
-                .of(CharSequence.class, char[].class).entries(1).constantValueSizeBySample(expected);
+                .of(CharSequence.class, char[].class).entries(1)
+                .constantValueSizeBySample(expected);
 
         try (ChronicleMap<CharSequence, char[]> map = newInstance(builder)) {
             map.put("Key", expected);