diff --git a/ghost/admin/app/services/dashboard-stats.js b/ghost/admin/app/services/dashboard-stats.js
index 0fc19af58b..0c17716fff 100644
--- a/ghost/admin/app/services/dashboard-stats.js
+++ b/ghost/admin/app/services/dashboard-stats.js
@@ -250,7 +250,7 @@ export default class DashboardStatsService extends Service {
             return stat.date >= moment().add(-this.chartDays, 'days').format('YYYY-MM-DD');
         }).reduce((acc, stat) => {
             const statSource = stat.source ?? '';
-            const existingSource = acc.find(s => s.source === statSource);
+            const existingSource = acc.find(s => s.source.toLowerCase() === statSource.toLowerCase());
             if (existingSource) {
                 existingSource.signups += stat.signups || 0;
                 existingSource.paidConversions += stat.paidConversions || 0;