diff --git a/src/gcal-year-view.c b/src/gcal-year-view.c
index c540ee01..6c046b94 100644
--- a/src/gcal-year-view.c
+++ b/src/gcal-year-view.c
@@ -308,7 +308,8 @@ update_sidebar (GcalYearView *year_view)
                 gtk_style_context_add_class (gtk_widget_get_style_context (cloned_child), "slanted-start");
               else if (end_comparison < 0)
                 gtk_style_context_add_class (gtk_widget_get_style_context (cloned_child), "slanted-end");
-              else
+
+              if (end_comparison == 0)
                 break;
             }
         }