diff --git a/python/obitools3/dms/view/view.pyx b/python/obitools3/dms/view/view.pyx
index 5e1c720..9f1eed3 100755
--- a/python/obitools3/dms/view/view.pyx
+++ b/python/obitools3/dms/view/view.pyx
@@ -272,7 +272,7 @@ cdef class View(OBIWrapper) :
         
         cdef Column  old_column                                             
         cdef Column  new_column
-        cdef index_t length = len(self)    # TODO because last line triggered error that triggered rewriting, but needs a cleaner way, or at least good documentation
+        cdef index_t length = len(self)
         cdef column_name_b = tobytes(column_name)
 
         if rewrite_last_line is False: