diff --git a/mne/viz/evoked.py b/mne/viz/evoked.py
index 58265ccd37e..e943fb87da4 100644
--- a/mne/viz/evoked.py
+++ b/mne/viz/evoked.py
@@ -808,6 +808,8 @@ def _plot_lines(
                 # Put back the y limits as fill_betweenx messes them up
                 ax.set_ylim(this_ylim)
 
+        ax.spines[:].set_zorder(max(l.get_zorder() for l in ax.get_lines()) + 1)
+
         lines.append(line_list)
 
     if selectable: