diff --git a/app/controllers/api/v1/media_controller.rb b/app/controllers/api/v1/media_controller.rb
index bb8e8d9ee..f8139ade7 100644
--- a/app/controllers/api/v1/media_controller.rb
+++ b/app/controllers/api/v1/media_controller.rb
@@ -4,6 +4,9 @@ class Api::V1::MediaController < ApiController
   before_action -> { doorkeeper_authorize! :write }
   before_action :require_user!
 
+  include ObfuscateFilename
+  obfuscate_filename :file
+
   respond_to :json
 
   def create
diff --git a/app/controllers/settings/profiles_controller.rb b/app/controllers/settings/profiles_controller.rb
index 4b2b5a131..21fbba2af 100644
--- a/app/controllers/settings/profiles_controller.rb
+++ b/app/controllers/settings/profiles_controller.rb
@@ -6,6 +6,10 @@ class Settings::ProfilesController < ApplicationController
   before_action :authenticate_user!
   before_action :set_account
 
+  include ObfuscateFilename
+  obfuscate_filename [:account, :avatar]
+  obfuscate_filename [:account, :header]
+
   def show
   end
 
diff --git a/app/models/concerns/obfuscate_filename.rb b/app/models/concerns/obfuscate_filename.rb
new file mode 100644
index 000000000..dc25cdbc2
--- /dev/null
+++ b/app/models/concerns/obfuscate_filename.rb
@@ -0,0 +1,16 @@
+module ObfuscateFilename
+  extend ActiveSupport::Concern
+
+  class_methods do
+    def obfuscate_filename(*args)
+      before_action { obfuscate_filename(*args) }
+    end
+  end
+
+  def obfuscate_filename(path)
+    file = params.dig(*path)
+    return if file.nil?
+
+    file.original_filename = "media" + File.extname(file.original_filename)
+  end
+end