diff --git a/packages/nocodb/src/modules/datas/helpers.ts b/packages/nocodb/src/modules/datas/helpers.ts
index c36e0b224c..b7dd7cf623 100644
--- a/packages/nocodb/src/modules/datas/helpers.ts
+++ b/packages/nocodb/src/modules/datas/helpers.ts
@@ -181,7 +181,9 @@ export async function serializeCellValue({
         }
       } catch {}
 
-      return (data || []).map((user) => `${user.email}`).join(', ');
+      return (data ? (Array.isArray(data) ? data : [data]) : [])
+        .map((user) => `${user.email}`)
+        .join(', ');
     }
     case UITypes.Lookup:
       {