diff --git a/app/jobs/update_pool_pseudo_tags_job.rb b/app/jobs/update_pool_pseudo_tags_job.rb
deleted file mode 100644
index 3c827e504..000000000
--- a/app/jobs/update_pool_pseudo_tags_job.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-class UpdatePoolPseudoTagsJob < ApplicationJob
-  queue_as :default
-  queue_with_priority 20
-
-  def perform(pool)
-    pool.update_category_pseudo_tags_for_posts
-  end
-end
diff --git a/app/models/pool.rb b/app/models/pool.rb
index 6699fad32..c9fc5fe98 100644
--- a/app/models/pool.rb
+++ b/app/models/pool.rb
@@ -8,12 +8,10 @@ class Pool < ApplicationRecord
   validates_uniqueness_of :name, case_sensitive: false, if: :name_changed?
   validate :validate_name, if: :name_changed?
   validates_inclusion_of :category, :in => %w(series collection)
-  validate :updater_can_change_category
   validate :updater_can_remove_posts
   validate :updater_can_edit_deleted
   before_validation :normalize_post_ids
   before_validation :normalize_name
-  after_save :update_category_pseudo_tags_for_posts_async
   after_save :create_version
   after_create :synchronize!
 
@@ -294,30 +292,6 @@ class Pool < ApplicationRecord
     creator.name
   end
 
-  def update_category_pseudo_tags_for_posts_async
-    if saved_change_to_category?
-      UpdatePoolPseudoTagsJob.perform_later(self)
-    end
-  end
-
-  def update_category_pseudo_tags_for_posts
-    Post.where(id: post_ids).find_each do |post|
-      post.reload
-      post.set_pool_category_pseudo_tags
-      Post.where(:id => post.id).update_all(:pool_string => post.pool_string)
-    end
-  end
-
-  def category_changeable_by?(user)
-    user.is_builder? || (user.is_member? && post_count <= Danbooru.config.pool_category_change_limit)
-  end
-
-  def updater_can_change_category
-    if category_changed? && !category_changeable_by?(CurrentUser.user)
-      errors[:base] << "You cannot change the category of pools with greater than #{Danbooru.config.pool_category_change_limit} posts"
-    end
-  end
-
   def validate_name
     case name
     when /\A(any|none|series|collection)\z/i
diff --git a/app/models/post.rb b/app/models/post.rb
index d07b15d60..ac37b0aa0 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -30,7 +30,6 @@ class Post < ApplicationRecord
   validate :updater_can_change_rating
   before_save :update_tag_post_counts
   before_save :set_tag_counts
-  after_save :set_pool_category_pseudo_tags
   before_create :autoban
   after_save :create_version
   after_save :update_parent_on_save
@@ -1041,7 +1040,6 @@ class Post < ApplicationRecord
 
       with_lock do
         self.pool_string = "#{pool_string} pool:#{pool.id}".strip
-        set_pool_category_pseudo_tags
         update_column(:pool_string, pool_string) unless new_record?
         pool.add!(self)
       end
@@ -1053,7 +1051,6 @@ class Post < ApplicationRecord
 
       with_lock do
         self.pool_string = pool_string.gsub(/(?:\A| )pool:#{pool.id}(?:\Z| )/, " ").strip
-        set_pool_category_pseudo_tags
         update_column(:pool_string, pool_string) unless new_record?
         pool.remove!(self)
       end
@@ -1064,18 +1061,6 @@ class Post < ApplicationRecord
         pool.remove!(self)
       end
     end
-
-    def set_pool_category_pseudo_tags
-      self.pool_string = (pool_string.split - ["pool:series", "pool:collection"]).join(" ")
-
-      pool_categories = pools.undeleted.pluck(:category)
-      if pool_categories.include?("series")
-        self.pool_string = "#{pool_string} pool:series".strip
-      end
-      if pool_categories.include?("collection")
-        self.pool_string = "#{pool_string} pool:collection".strip
-      end
-    end
   end
 
   module VoteMethods
diff --git a/config/danbooru_default_config.rb b/config/danbooru_default_config.rb
index d3164f4f4..38c4506f6 100644
--- a/config/danbooru_default_config.rb
+++ b/config/danbooru_default_config.rb
@@ -103,11 +103,6 @@ module Danbooru
       2
     end
 
-    # Members cannot change the category of pools with more than this many posts.
-    def pool_category_change_limit
-      100
-    end
-
     # Users cannot search for more than X regular tags at a time.
     def base_tag_query_limit
       6
diff --git a/test/unit/pool_test.rb b/test/unit/pool_test.rb
index 43e0099ba..75d24199d 100644
--- a/test/unit/pool_test.rb
+++ b/test/unit/pool_test.rb
@@ -106,7 +106,7 @@ class PoolTest < ActiveSupport::TestCase
       assert_equal(@posts.map(&:id), @pool.post_ids)
 
       @posts.each(&:reload)
-      assert_equal(["pool:#{@pool.id} pool:series"] * @posts.size, @posts.map(&:pool_string))
+      assert_equal(["pool:#{@pool.id}"] * @posts.size, @posts.map(&:pool_string))
     end
   end
 
@@ -161,7 +161,7 @@ class PoolTest < ActiveSupport::TestCase
 
     should "update any new posts that were added" do
       @p1.reload
-      assert_equal("pool:#{@pool.id} pool:series", @p1.pool_string)
+      assert_equal("pool:#{@pool.id}", @p1.pool_string)
     end
   end
 
@@ -194,7 +194,7 @@ class PoolTest < ActiveSupport::TestCase
       end
 
       should "add the pool to the post" do
-        assert_equal("pool:#{@pool.id} pool:series", @p1.pool_string)
+        assert_equal("pool:#{@pool.id}", @p1.pool_string)
       end
 
       should "increment the post count" do
@@ -211,7 +211,7 @@ class PoolTest < ActiveSupport::TestCase
         end
 
         should "not double add the pool to the post" do
-          assert_equal("pool:#{@pool.id} pool:series", @p1.pool_string)
+          assert_equal("pool:#{@pool.id}", @p1.pool_string)
         end
 
         should "not double increment the post count" do
@@ -279,7 +279,7 @@ class PoolTest < ActiveSupport::TestCase
         end
 
         should "not affect the post" do
-          assert_equal("pool:#{@pool.id} pool:series", @p1.pool_string)
+          assert_equal("pool:#{@pool.id}", @p1.pool_string)
         end
 
         should "not affect the post count" do
@@ -288,37 +288,6 @@ class PoolTest < ActiveSupport::TestCase
       end
     end
 
-    context "by changing the category" do
-      setup do
-        Danbooru.config.stubs(:pool_category_change_limit).returns(1)
-        @pool.add!(@p1)
-        @pool.add!(@p2)
-      end
-
-      teardown do
-        Danbooru.config.unstub(:pool_category_change_limit)
-      end
-
-      should "not allow Members to change the category of large pools" do
-        @member = FactoryBot.create(:member_user)
-        as(@member) { @pool.update(category: "collection") }
-
-        assert_equal(["You cannot change the category of pools with greater than 1 posts"], @pool.errors[:base])
-      end
-
-      should "allow Builders to change the category of large pools" do
-        perform_enqueued_jobs do
-          @builder = create(:builder_user)
-          as(@builder) { @pool.update(category: "collection") }
-        end
-
-        assert_equal(true, @pool.valid?)
-        assert_equal("collection", @pool.category)
-        assert_equal("pool:#{@pool.id} pool:collection", @p1.reload.pool_string)
-        assert_equal("pool:#{@pool.id} pool:collection", @p2.reload.pool_string)
-      end
-    end
-
     should "create new versions for each distinct user" do
       assert_equal(1, @pool.versions.size)
       user2 = travel_to(1.month.ago) {FactoryBot.create(:user)}
@@ -406,7 +375,7 @@ class PoolTest < ActiveSupport::TestCase
         @p2.reload
         @p3.reload
         assert_equal("", @p1.pool_string)
-        assert_equal("pool:#{@pool.id} pool:series", @p2.pool_string)
+        assert_equal("pool:#{@pool.id}", @p2.pool_string)
         assert_equal("", @p3.pool_string)
       end
     end
diff --git a/test/unit/post_archive_test.rb b/test/unit/post_archive_test.rb
index 25dc5c2b8..883fc6304 100644
--- a/test/unit/post_archive_test.rb
+++ b/test/unit/post_archive_test.rb
@@ -79,7 +79,7 @@ class PostArchiveTest < ActiveSupport::TestCase
 
       should "create a version" do
         assert_equal("tagme", @post.tag_string)
-        assert_equal("pool:#{@pool.id} pool:series", @post.pool_string)
+        assert_equal("pool:#{@pool.id}", @post.pool_string)
 
         assert_equal(1, @post.versions.size)
         assert_equal("tagme", @post.versions.last.tags)
diff --git a/test/unit/post_test.rb b/test/unit/post_test.rb
index 7c29e57fd..94ce84970 100644
--- a/test/unit/post_test.rb
+++ b/test/unit/post_test.rb
@@ -863,7 +863,7 @@ class PostTest < ActiveSupport::TestCase
               @post.reload
               @pool.reload
               assert_equal([@post.id], @pool.post_ids)
-              assert_equal("pool:#{@pool.id} pool:series", @post.pool_string)
+              assert_equal("pool:#{@pool.id}", @post.pool_string)
             end
           end
 
@@ -894,7 +894,7 @@ class PostTest < ActiveSupport::TestCase
               @post.reload
               @pool.reload
               assert_equal([@post.id], @pool.post_ids)
-              assert_equal("pool:#{@pool.id} pool:series", @post.pool_string)
+              assert_equal("pool:#{@pool.id}", @post.pool_string)
             end
           end
 
@@ -909,7 +909,7 @@ class PostTest < ActiveSupport::TestCase
                 @post.reload
                 @pool.reload
                 assert_equal([@post.id], @pool.post_ids)
-                assert_equal("pool:#{@pool.id} pool:series", @post.pool_string)
+                assert_equal("pool:#{@pool.id}", @post.pool_string)
               end
             end
 
@@ -920,7 +920,7 @@ class PostTest < ActiveSupport::TestCase
                 @post.reload
                 assert_not_nil(@pool)
                 assert_equal([@post.id], @pool.post_ids)
-                assert_equal("pool:#{@pool.id} pool:series", @post.pool_string)
+                assert_equal("pool:#{@pool.id}", @post.pool_string)
               end
             end
 
@@ -1768,10 +1768,10 @@ class PostTest < ActiveSupport::TestCase
         pool = FactoryBot.create(:pool)
         post.add_pool!(pool)
         post.reload
-        assert_equal("pool:#{pool.id} pool:series", post.pool_string)
+        assert_equal("pool:#{pool.id}", post.pool_string)
         post.add_pool!(pool)
         post.reload
-        assert_equal("pool:#{pool.id} pool:series", post.pool_string)
+        assert_equal("pool:#{pool.id}", post.pool_string)
         post.remove_pool!(pool)
         post.reload
         assert_equal("", post.pool_string)