diff --git a/nostr/filter.py b/nostr/filter.py
index 4259c6e..1233249 100644
--- a/nostr/filter.py
+++ b/nostr/filter.py
@@ -75,8 +75,5 @@ class Filters(UserList):
         return False
 
     def to_json_array(self) -> list:
-        res = []
-        for filter in self.data:
-            res.append(filter.to_json_object())
-        return res
+        return [filter.to_json_object() for filter in self.data]
         
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