diff --git a/lily/tie-formatting-problem.cc b/lily/tie-formatting-problem.cc
index 6c7e2a0..85d38cc 100644
--- a/lily/tie-formatting-problem.cc
+++ b/lily/tie-formatting-problem.cc
@@ -461,12 +461,12 @@ Tie_formatting_problem::generate_configu
        */
       if (head_positions_slice (columns[LEFT]).contains (pos)
 	  || head_positions_slice (columns[RIGHT]).contains (pos)
-	  || abs (pos) < 2 * Staff_symbol_referencer::staff_radius (details_.staff_symbol_referencer_))
+	  || abs (pos) <= 2 * Staff_symbol_referencer::staff_radius (details_.staff_symbol_referencer_))
 	{
 	  if (h < details_.intra_space_threshold_ * 0.5 * details_.staff_space_)
 	    {
 	      if (!Staff_symbol_referencer::on_line (details_.staff_symbol_referencer_, pos)
-		  && abs (pos) < 2 * Staff_symbol_referencer::staff_radius (details_.staff_symbol_referencer_))
+		  && abs (pos) <= 2 * Staff_symbol_referencer::staff_radius (details_.staff_symbol_referencer_))
 		{
 		  conf->center_tie_vertically (details_);
 		}