diff --git a/config/config.exs b/config/config.exs
index f889e3259..326c4b601 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -34,7 +34,7 @@ config :pleroma, Pleroma.Captcha.Kocaptcha, endpoint: "https://captcha.kotobank.
 # Upload configuration
 config :pleroma, Pleroma.Upload,
   uploader: Pleroma.Uploaders.Local,
-  filters: [],
+  filters: [Pleroma.Upload.Filter.Dedupe],
   link_name: true,
   proxy_remote: false,
   proxy_opts: [
diff --git a/config/test.exs b/config/test.exs
index a3f36c9e1..3691e5bd1 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -17,7 +17,7 @@ config :pleroma, Pleroma.Captcha,
 # Print only warnings and errors during test
 config :logger, level: :warn
 
-config :pleroma, Pleroma.Upload, link_name: false
+config :pleroma, Pleroma.Upload, filters: [], link_name: false
 
 config :pleroma, Pleroma.Uploaders.Local, uploads: "test/uploads"