diff --git a/teamsnap/dashboard/templatetags/availability_percentage.py b/teamsnap/dashboard/templatetags/availability_percentage.py
index dc62e8b..85b0a3a 100644
--- a/teamsnap/dashboard/templatetags/availability_percentage.py
+++ b/teamsnap/dashboard/templatetags/availability_percentage.py
@@ -5,10 +5,13 @@ register = template.Library()
 
 @register.simple_tag
 def availability_percentage(availability_summary, status: str):
-    total = (
-        availability_summary.data["player_going_count"]
-        + availability_summary.data["player_maybe_count"]
-        + availability_summary.data["player_not_going_count"]
-        + availability_summary.data["player_unknown_count"]
-    )
-    return availability_summary.data[status + "_count"] / total * 100
+    if availability_summary:
+        total = (
+            availability_summary.data["player_going_count"]
+            + availability_summary.data["player_maybe_count"]
+            + availability_summary.data["player_not_going_count"]
+            + availability_summary.data["player_unknown_count"]
+        )
+        return availability_summary.data[status + "_count"] / total * 100
+    else:
+        return ""