diff --git a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
index 4038e986e..48a8219c9 100755
--- a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
+++ b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
@@ -34,6 +34,7 @@ import net.openhft.chronicle.hash.serialization.SizeMarshaller;
 import net.openhft.chronicle.hash.serialization.internal.*;
 import net.openhft.lang.collection.DirectBitSet;
 import net.openhft.lang.collection.SingleThreadedDirectBitSet;
+import net.openhft.lang.io.*;
 import net.openhft.lang.io.serialization.JDKObjectSerializer;
 import net.openhft.lang.io.serialization.ObjectSerializer;
 import net.openhft.lang.model.DataValueClasses;