diff --git a/tardis/visualization/tools/convergence_plot.py b/tardis/visualization/tools/convergence_plot.py
index 16e588f5e76..01292abf505 100644
--- a/tardis/visualization/tools/convergence_plot.py
+++ b/tardis/visualization/tools/convergence_plot.py
@@ -332,6 +332,7 @@ def update_plasma_plots(self):
             x=velocity_km_s,
             y=self.iterable_data["t_rad"],
             line_color=self.plasma_colorscale[self.current_iteration - 1],
+            line_shape="hv",
             row=1,
             col=1,
             name=self.current_iteration,
@@ -346,6 +347,7 @@ def update_plasma_plots(self):
             x=velocity_km_s,
             y=self.iterable_data["w"],
             line_color=self.plasma_colorscale[self.current_iteration - 1],
+            line_shape="hv",
             row=1,
             col=2,
             legendgroup=f"group-{self.current_iteration}",