X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FAlignFrame.java;h=39884ceefc32d4ec4bc733f4dbc8b9f09176ad7f;hb=af4a464ed5537d777ec821929704e9169d8fba9e;hp=8396e6a80d109b87b368ab3296b1a04e3c9aa8d5;hpb=bc9b26588bfe5ef5861e924efa4e15ff73f1b0c4;p=jalview.git

diff --git a/src/jalview/gui/AlignFrame.java b/src/jalview/gui/AlignFrame.java
index 8396e6a..39884ce 100755
--- a/src/jalview/gui/AlignFrame.java
+++ b/src/jalview/gui/AlignFrame.java
@@ -3668,7 +3668,7 @@ public class AlignFrame extends GAlignFrame implements DropTargetListener,
   {
     TreePanel tp;
 
-    if (viewport.getSelectionGroup() != null)
+    if (viewport.getSelectionGroup() != null && viewport.getSelectionGroup().getSize()>0)
     {
       if (viewport.getSelectionGroup().getSize() < 3)
       {