diff --git a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
index 3d7813ef0..3855bc85c 100755
--- a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
+++ b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
@@ -230,13 +230,8 @@ class VanillaChronicleMap<K, KI, MKI extends MetaBytesInterop<K, ? super KI>,
     }
 
     final long createMappedStoreAndSegments(BytesStore bytesStore) throws IOException {
-        // checks the the store has not been closed
-        // todo remove the CheckedBytesStore before the release
-        this.ms = new CheckedBytesStore(bytesStore);
-
-
-        //  this.ms = bytesStore;
 
+        this.ms = bytesStore;
         onHeaderCreated();
 
         long offset = getHeaderSize();