JAL-2613 Unit tests and a fix. Phew.

[jalview.git] / src / jalview / datamodel / HiddenSequences.java

diff --git a/src/jalview/datamodel/HiddenSequences.java b/src/jalview/datamodel/HiddenSequences.java
index a98b10e..ed07290 100755 (executable)
--- a/src/jalview/datamodel/HiddenSequences.java
+++ b/src/jalview/datamodel/HiddenSequences.java
@@ -310,7 +310,7 @@ public class HiddenSequences
       return startRow - visibleDistance;
     }
 
-    int index = startRow;
+    int index = Math.min(startRow, hiddenSequences.length - 1);
     int count = 0;
     while ((index > -1) && (count < visibleDistance))
     {