diff --git a/src/invidious/jsonfilter.cr b/src/invidious/jsonfilter.cr
index 751fac08..224a22cc 100644
--- a/src/invidious/jsonfilter.cr
+++ b/src/invidious/jsonfilter.cr
@@ -3,7 +3,7 @@ require "json"
 module JSONFilter
   alias BracketIndex = Hash(Int64, Int64)
 
-  alias GroupedFieldsValue = String | Array(String) | Array(GroupedFieldsValue)
+  alias GroupedFieldsValue = String | Array(GroupedFieldsValue)
   alias GroupedFieldsList = Array(GroupedFieldsValue)
 
   class FieldsParser