diff --git a/apps/web/src/pages/campaigns/[id].tsx b/apps/web/src/pages/campaigns/[id].tsx
index 146ee1c..88bc4ba 100644
--- a/apps/web/src/pages/campaigns/[id].tsx
+++ b/apps/web/src/pages/campaigns/[id].tsx
@@ -97,7 +97,7 @@ export default function CampaignDetailsPage() {
 
   // Fetch project members for test email
   const {data: projectMembers} = useSWR<{data: Array<{userId: string; email: string; role: string}>}>(
-    id ? `/projects/${campaign?.data.projectId}/members` : null,
+    id && campaign?.data.projectId ? `/projects/${campaign.data.projectId}/members` : null,
     {revalidateOnFocus: false},
   );