diff --git a/src/libsysprof-gtk/sysprof-time-span-layer.c b/src/libsysprof-gtk/sysprof-time-span-layer.c
index c9836202..d1a12c10 100644
--- a/src/libsysprof-gtk/sysprof-time-span-layer.c
+++ b/src/libsysprof-gtk/sysprof-time-span-layer.c
@@ -125,7 +125,6 @@ sysprof_time_span_layer_snapshot (GtkWidget   *widget,
                      _sysprof_chart_layer_get_accent_bg_color (),
                      _sysprof_chart_layer_get_accent_fg_color (),
                      TRUE, .5);
-      mixed.alpha = .8;
       event_color = &mixed;
     }