diff --git a/plugins/polio/js/src/domains/Campaigns/CampaignsList/Dashboard.tsx b/plugins/polio/js/src/domains/Campaigns/CampaignsList/Dashboard.tsx
index 95a3de8a5b..8294a7c582 100644
--- a/plugins/polio/js/src/domains/Campaigns/CampaignsList/Dashboard.tsx
+++ b/plugins/polio/js/src/domains/Campaigns/CampaignsList/Dashboard.tsx
@@ -44,7 +44,7 @@ export const Dashboard: FunctionComponent = () => {
             campaigns: rawCampaigns.campaigns.map(campaign => ({
                 ...campaign,
                 grouped_campaigns:
-                    campaign.grouped_campaigns.length > 0
+                    (campaign.grouped_campaigns?.length ?? 0) > 0
                         ? campaign.grouped_campaigns
                         : null,
             })),