diff --git a/Iceshrimp.Backend/Controllers/Mastodon/AccountController.cs b/Iceshrimp.Backend/Controllers/Mastodon/AccountController.cs
index d67a85f5..a3557178 100644
--- a/Iceshrimp.Backend/Controllers/Mastodon/AccountController.cs
+++ b/Iceshrimp.Backend/Controllers/Mastodon/AccountController.cs
@@ -174,7 +174,7 @@ public class AccountController(
 	[ProducesErrors(HttpStatusCode.Forbidden)]
 	public async Task<IEnumerable<AccountEntity>> GetManyUsers(
 		[FromQuery(Name = "id")] [MaxLength(40)]
-		HashSet<string> ids
+		List<string> ids
 	)
 	{
 		var localUser = HttpContext.GetUser();
diff --git a/Iceshrimp.Backend/Controllers/Mastodon/StatusController.cs b/Iceshrimp.Backend/Controllers/Mastodon/StatusController.cs
index 4d63dc34..6c1c49a6 100644
--- a/Iceshrimp.Backend/Controllers/Mastodon/StatusController.cs
+++ b/Iceshrimp.Backend/Controllers/Mastodon/StatusController.cs
@@ -76,7 +76,7 @@ public class StatusController(
 	[Authenticate("read:statuses")]
 	[ProducesResults(HttpStatusCode.OK)]
 	[ProducesErrors(HttpStatusCode.Forbidden)]
-	public async Task<IEnumerable<StatusEntity>> GetManyNotes([FromQuery(Name = "id")] [MaxLength(20)] HashSet<string> ids)
+	public async Task<IEnumerable<StatusEntity>> GetManyNotes([FromQuery(Name = "id")] [MaxLength(20)] List<string> ids)
 	{
 		var user = HttpContext.GetUser();
 		if (security.Value.PublicPreview == Enums.PublicPreview.Lockdown && user == null)