diff --git a/DysonNetwork.Sphere/Account/AccountService.cs b/DysonNetwork.Sphere/Account/AccountService.cs
index 74c7b48..76529c3 100644
--- a/DysonNetwork.Sphere/Account/AccountService.cs
+++ b/DysonNetwork.Sphere/Account/AccountService.cs
@@ -51,13 +51,14 @@ public class AccountService(
     }
 
     /// Maintenance methods for server administrator
-
     public async Task EnsureAccountProfileCreated()
     {
         var accountsId = await db.Accounts.Select(a => a.Id).ToListAsync();
-        var existingId = await db.AccountProfiles.Select(p => p.AccountId).ToListAsync();
-        var missingId = accountsId.Except(existingId).ToList();
-    
+        var missingId = await db.AccountProfiles
+            .Where(p => !accountsId.Contains(p.AccountId))
+            .Select(p => p.AccountId)
+            .ToListAsync();
+
         if (missingId.Count != 0)
         {
             var newProfiles = missingId.Select(id => new Profile { AccountId = id }).ToList();
diff --git a/DysonNetwork.Sphere/Storage/FileController.cs b/DysonNetwork.Sphere/Storage/FileController.cs
index 91f15ba..6b45ebc 100644
--- a/DysonNetwork.Sphere/Storage/FileController.cs
+++ b/DysonNetwork.Sphere/Storage/FileController.cs
@@ -20,7 +20,7 @@ public class FileController(
         var file = await fs.GetFileAsync(id);
         if (file is null) return NotFound();
         
-        if (file.StorageUrl is not null) return Redirect(file.StorageUrl);
+        if (!string.IsNullOrWhiteSpace(file.StorageUrl)) return Redirect(file.StorageUrl);
         
         if (file.UploadedTo is null)
         {