X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fjalview%2Fdatamodel%2FAlignedCodonFrame.java;h=6e83fbb7d262331d3dff05336b5c939a50bbe900;hb=c19ee8bb9c1b1f2b0996522a4935333d43ac9671;hp=0927dda472b244a41fd8c2d5c293f5fb64503aa0;hpb=87a707afdbbe1675330f7e82faaf9443af89cefe;p=jalview.git

diff --git a/src/jalview/datamodel/AlignedCodonFrame.java b/src/jalview/datamodel/AlignedCodonFrame.java
index 0927dda..6e83fbb 100644
--- a/src/jalview/datamodel/AlignedCodonFrame.java
+++ b/src/jalview/datamodel/AlignedCodonFrame.java
@@ -220,6 +220,10 @@ public class AlignedCodonFrame
       int[] codon = null;
       SequenceI mappedSeq = null;
       SequenceI ds = seq.getDatasetSequence();
+      if (ds == null)
+      {
+        ds = seq;
+      }
       
       if (this.fromSeq == seq || this.fromSeq == ds)
       {