diff --git a/functions/src/memberCache/memberCache.ts b/functions/src/memberCache/memberCache.ts
index 7b118e6..27ac98e 100644
--- a/functions/src/memberCache/memberCache.ts
+++ b/functions/src/memberCache/memberCache.ts
@@ -394,6 +394,9 @@ async function generateMinimalCacheEntry(
 
     const daysUntilExpiry = membershipData.daysUntilExpiry || null;
 
+    const displayName = firstName.length === 0 ? 'Unknown' : 
+        (lastName.length === 0 ? firstName : `${firstName} ${lastName}`);
+
     const displayName = firstName.length === 0 ? 'Unknown' : 
         (lastName.length === 0 ? firstName : `${firstName} ${lastName}`);