diff --git a/app/models/artist.rb b/app/models/artist.rb
index b9e999c1d..a282b2200 100644
--- a/app/models/artist.rb
+++ b/app/models/artist.rb
@@ -180,8 +180,13 @@ class Artist < ApplicationRecord
 
     def save_urls
       if url_string && saved_change_to_url_string?
-        self.urls = url_string.scan(/[^[:space:]]+/).uniq.map do |url|
-          self.urls.find_or_create_by(url: url)
+        Artist.transaction do
+          self.urls = url_string.scan(/[^[:space:]]+/).uniq.map do |url|
+            # need to do these shenanigans to properly handle prefixes
+            aurl = self.urls.find_or_create_by(url: ArtistUrl.strip_prefixes(url))
+            aurl.update(url: url)
+            aurl
+          end
         end
       end
     end
diff --git a/app/models/artist_url.rb b/app/models/artist_url.rb
index 066c27c27..e0f123de9 100644
--- a/app/models/artist_url.rb
+++ b/app/models/artist_url.rb
@@ -1,11 +1,19 @@
 class ArtistUrl < ApplicationRecord
   before_validation :parse_prefix
-  before_save :initialize_normalized_url, on: [ :create ]
-  before_save :normalize
-  validates :url, presence: true
+  before_validation :initialize_normalized_url, on: :create
+  before_validation :normalize
+  validates :url, presence: true, uniqueness: { scope: :artist_id }
   validate :validate_url_format
   belongs_to :artist, :touch => true
 
+  def self.strip_prefixes(url)
+    url.sub(/^[-]+/, "")
+  end
+
+  def self.is_active?(url)
+    url !~ /^-/
+  end
+
   def self.normalize(url)
     if url.nil?
       nil
@@ -60,7 +68,8 @@ class ArtistUrl < ApplicationRecord
   end
 
   def parse_prefix
-    if url && url[0] == "-"
+    case url
+    when /^-/
       self.url = url[1..-1]
       self.is_active = false
     end
diff --git a/app/views/posts/partials/index/_missed_search_count.html.erb b/app/views/posts/partials/index/_missed_search_count.html.erb
index abe3f46e9..18ab70d35 100644
--- a/app/views/posts/partials/index/_missed_search_count.html.erb
+++ b/app/views/posts/partials/index/_missed_search_count.html.erb
@@ -1,6 +1,5 @@
 <script type="text/javascript">
   $(function() {
-    var tags = $("#tags").val();
     $.post("<%= Danbooru.config.reportbooru_server %>/missed_searches", {
       sig: "<%= sig %>"
     });
diff --git a/test/unit/artist_test.rb b/test/unit/artist_test.rb
index 84d4ad0db..7ca4d023f 100644
--- a/test/unit/artist_test.rb
+++ b/test/unit/artist_test.rb
@@ -42,6 +42,13 @@ class ArtistTest < ActiveSupport::TestCase
       refute(@artist.urls[0].is_active?)      
     end
 
+    should "allow deactivating a url" do
+      @artist = Artist.create(name: "blah", url_string: "http://monet.com")
+      @artist.update(url_string: "-http://monet.com")
+      assert_equal(1, @artist.urls.count)
+      refute(@artist.urls[0].is_active?)
+    end
+
     should "should have a valid name" do
       @artist = Artist.new(:name => "-blah")
       @artist.save