diff --git a/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java b/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
index 2b9e5741eafae7c6fa381bdef25cc48b028eca64..ae2fb2d72adb694e0b6ad9664ba0d1d9f6faf41a 100644
--- a/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
+++ b/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
@@ -74,7 +74,7 @@ import uk.ac.sanger.artemis.util.OutOfRangeException;
     {
       try
       {
-        //if(bamView.isConcatSequences())
+        if(bamView.isConcatSequences())
         {
           int offset = bamView.getSequenceOffset(contig);
           start += offset;