diff --git a/app/models/post.rb b/app/models/post.rb
index b82aa67aa..5c417a4ae 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -1,4 +1,6 @@
 # frozen_string_literal: true
+# normalize unicode in non-web sources
+# normalize percent-encode unicode in source urls
 
 class Post < ApplicationRecord
   class RevertError < StandardError; end
@@ -96,7 +98,7 @@ class Post < ApplicationRecord
       file_size: media_asset.file_size,
       image_width: media_asset.image_width,
       image_height: media_asset.image_height,
-      source: Sources::Strategies.find(upload.source, upload.referer_url).canonical_url || upload.source,
+      source: params[:source].to_s,
       tag_string: params[:tag_string],
       rating: params[:rating],
       parent_id: params[:parent_id],
diff --git a/app/views/uploads/show.html.erb b/app/views/uploads/show.html.erb
index 02612d334..50d0b1f9b 100644
--- a/app/views/uploads/show.html.erb
+++ b/app/views/uploads/show.html.erb
@@ -56,7 +56,7 @@
         <%= f.input :media_asset_id, as: :hidden, input_html: { value: @media_asset.id } %>
         <%= f.input :upload_media_asset_id, as: :hidden, input_html: { value: @upload_media_asset.id } %>
 
-        <%= f.input :source, as: :string %>
+        <%= f.input :source, as: :string, input_html: { value: @upload.source_strategy&.canonical_url } %>
         <%= f.input :rating, collection: [["Explicit", "e"], ["Questionable", "q"], ["Safe", "s"]], as: :radio_buttons, selected: @post.rating %>
         <%= f.input :parent_id, label: "Parent ID", as: :string, input_html: { value: @post.parent_id } %>
 
diff --git a/test/functional/posts_controller_test.rb b/test/functional/posts_controller_test.rb
index 7b92a486b..43a32a51a 100644
--- a/test/functional/posts_controller_test.rb
+++ b/test/functional/posts_controller_test.rb
@@ -663,6 +663,13 @@ class PostsControllerTest < ActionDispatch::IntegrationTest
         assert_equal("tagme", @post.tag_string)
       end
 
+      should "set the source" do
+        @post = create_post!(source: "https://www.example.com")
+
+        assert_redirected_to @post
+        assert_equal("https://www.example.com", @post.source)
+      end
+
       should "autoban the post when it is tagged banned_artist" do
         @post = create_post!(tag_string: "banned_artist")
         assert_equal(true, @post.is_banned?)