diff --git a/src/gui/event-editor/gcal-date-chooser-day.c b/src/gui/event-editor/gcal-date-chooser-day.c
index cc244520..aab5d7d5 100644
--- a/src/gui/event-editor/gcal-date-chooser-day.c
+++ b/src/gui/event-editor/gcal-date-chooser-day.c
@@ -165,23 +165,3 @@ gcal_date_chooser_day_set_selected (GcalDateChooserDay *self,
   else
     gtk_widget_unset_state_flags (GTK_WIDGET (self), GTK_STATE_FLAG_SELECTED);
 }
-
-void
-gcal_date_chooser_day_set_options (GcalDateChooserDay        *self,
-                                   GcalDateChooserDayOptions  options)
-{
-  if (options & GCAL_DATE_CHOOSER_DAY_WEEKEND)
-    gtk_widget_add_css_class (GTK_WIDGET (self), "weekend");
-  else
-    gtk_widget_remove_css_class (GTK_WIDGET (self), "weekend");
-
-  if (options & GCAL_DATE_CHOOSER_DAY_HOLIDAY)
-    gtk_widget_add_css_class (GTK_WIDGET (self), "holiday");
-  else
-    gtk_widget_remove_css_class (GTK_WIDGET (self), "holiday");
-
-  if (options & GCAL_DATE_CHOOSER_DAY_MARKED)
-    gtk_widget_add_css_class (GTK_WIDGET (self), "marked");
-  else
-    gtk_widget_remove_css_class (GTK_WIDGET (self), "marked");
-}
diff --git a/src/gui/event-editor/gcal-date-chooser-day.h b/src/gui/event-editor/gcal-date-chooser-day.h
index d1b39cb8..109f1211 100644
--- a/src/gui/event-editor/gcal-date-chooser-day.h
+++ b/src/gui/event-editor/gcal-date-chooser-day.h
@@ -17,8 +17,6 @@
 
 #pragma once
 
-#include "gcal-date-chooser.h"
-
 #include <adwaita.h>
 
 G_BEGIN_DECLS
@@ -39,7 +37,4 @@ void                 gcal_date_chooser_day_set_other_month       (GcalDateChoose
 void                 gcal_date_chooser_day_set_selected          (GcalDateChooserDay *day,
                                                                   gboolean            selected);
 
-void                 gcal_date_chooser_day_set_options           (GcalDateChooserDay *day,
-                                                                  GcalDateChooserDayOptions options);
-
 G_END_DECLS