diff --git a/rowing/app/plots.py b/rowing/app/plots.py
index a4733c8..259e99e 100644
--- a/rowing/app/plots.py
+++ b/rowing/app/plots.py
@@ -2,6 +2,7 @@
 import streamlit as st
 import pandas as pd
 import plotly.express as px
+from plotly.validators.scatter.marker import SymbolValidator
 
 from rowing.world_rowing import fields
 
@@ -19,6 +20,11 @@
     }
 }
 
+SYMBOLS = [
+    s for s in SymbolValidator().values[2::3]
+    if not s.endswith("open") or s.endswith("dot")
+]
+
 
 def live_race_plot_data(live_race, *args, **kwargs):
     if live_race.livetracker is None: