diff --git a/MastodonSDK/Sources/MastodonCore/Extension/MastodonSDK/Mastodon+Entity+History.swift b/MastodonSDK/Sources/MastodonCore/Extension/MastodonSDK/Mastodon+Entity+History.swift
deleted file mode 100644
index b116889b8..000000000
--- a/MastodonSDK/Sources/MastodonCore/Extension/MastodonSDK/Mastodon+Entity+History.swift
+++ /dev/null
@@ -1,20 +0,0 @@
-//
-//  Mastodon+Entity+History.swift
-//  Mastodon
-//
-//  Created by xiaojian sun on 2021/4/2.
-//
-
-import MastodonSDK
-
-extension Mastodon.Entity.History: Hashable {
-    public func hash(into hasher: inout Hasher) {
-        hasher.combine(uses)
-        hasher.combine(accounts)
-        hasher.combine(day)
-    }
-    
-    public static func == (lhs: Mastodon.Entity.History, rhs: Mastodon.Entity.History) -> Bool {
-        return lhs.uses == rhs.uses && lhs.uses == rhs.uses && lhs.day == rhs.day
-    }
-}