--- a/SelectionInListView.st	Sat Oct 10 16:54:30 2015 +0200
+++ b/SelectionInListView.st	Sun Oct 11 09:43:50 2015 +0200
@@ -2800,10 +2800,12 @@
     |lineNr len|
 
     lineNr := self lineAtY:aPoint y.
-    len := self widthOfLine:lineNr.
-    len > width ifTrue:[
-        ^ (self listAt:lineNr)  
-    ].      
+    lineNr notNil ifTrue:[
+        len := self widthOfLine:lineNr.
+        len > width ifTrue:[
+            ^ (self listAt:lineNr)  
+        ].      
+    ].
     ^ nil
 ! !