diff --git a/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java b/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
index ae2fb2d72adb694e0b6ad9664ba0d1d9f6faf41a..155be81a0b4d1ac433d68193737687ded3ef828c 100644
--- a/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
+++ b/uk/ac/sanger/artemis/components/alignment/CRAMReferenceSequenceFile.java
@@ -107,5 +107,8 @@ import uk.ac.sanger.artemis.util.OutOfRangeException;
     public void reset()
     {
     }
-    
-  }
\ No newline at end of file
+
+    public void close()
+    {
+    }
+  }