X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=inline;f=src%2Fjalview%2Fdatamodel%2FAlignment.java;h=42559c620ad74ca9837f73da38af6dca0eb9ec91;hb=85024c0dee90b249ba1e03dc991ce0a4d0156cda;hp=1a0d82ce20d12b49e7979259f775af10410809a3;hpb=8a6fa9ea9900d0f106529c3f6283e7f9d76dd2cb;p=jalview.git

diff --git a/src/jalview/datamodel/Alignment.java b/src/jalview/datamodel/Alignment.java
index 1a0d82c..42559c6 100755
--- a/src/jalview/datamodel/Alignment.java
+++ b/src/jalview/datamodel/Alignment.java
@@ -143,7 +143,7 @@ public class Alignment implements AlignmentI
    */
   public SequenceI getSequenceAt(int i)
   {
-    if (i < sequences.size())
+    if (i>-1 && i < sequences.size())
     {
       return (SequenceI) sequences.elementAt(i);
     }