diff --git a/app/assets/javascripts/related_tag.js.erb b/app/assets/javascripts/related_tag.js.erb
index 7eda8f32f..44c64f3c4 100644
--- a/app/assets/javascripts/related_tag.js.erb
+++ b/app/assets/javascripts/related_tag.js.erb
@@ -37,7 +37,7 @@
       $.get("/related_tag.json", {
         "query": Danbooru.RelatedTag.current_tag(),
         "category": category
-      }).success(Danbooru.RelatedTag.process_response);
+      }, Danbooru.RelatedTag.process_response);
       $("#artist-tags-container").hide();
       e.preventDefault();
     });
@@ -273,7 +273,7 @@
     $("#artist-tags").html("<em>Loading...</em>");
     var url = $("#upload_source,#post_source");
     var referer_url = $("#upload_referer_url");
-    $.get("/artists/finder.json", {"url": url.val(), "referer_url": referer_url.val()}).success(Danbooru.RelatedTag.process_artist);
+    $.get("/artists/finder.json", {"url": url.val(), "referer_url": referer_url.val()}, Danbooru.RelatedTag.process_artist);
     e.preventDefault();
   }
 
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index eff5ab2aa..c19e44742 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -128,7 +128,7 @@ class ApplicationController < ActionController::Base
   def authentication_failed
     respond_to do |fmt|
       fmt.html do
-        render :text => "authentication failed", :status => 401
+        render :plain => "authentication failed", :status => 401
       end
 
       fmt.xml do
diff --git a/app/controllers/legacy_controller.rb b/app/controllers/legacy_controller.rb
index efb39abea..6592cb681 100644
--- a/app/controllers/legacy_controller.rb
+++ b/app/controllers/legacy_controller.rb
@@ -44,7 +44,7 @@ class LegacyController < ApplicationController
   end
 
   def unavailable
-    render :text => "this resource is no longer available", :status => 410
+    render :plain => "this resource is no longer available", :status => 410
   end
 
 private
diff --git a/app/controllers/static_controller.rb b/app/controllers/static_controller.rb
index 687dbecfd..d7e902b5c 100644
--- a/app/controllers/static_controller.rb
+++ b/app/controllers/static_controller.rb
@@ -9,7 +9,7 @@ class StaticController < ApplicationController
   end
 
   def not_found
-    render text: "not found", status: :not_found
+    render plain: "not found", status: :not_found
   end
 
   def error