diff --git a/lib/acts_as_taggable_on/acts_as_taggable_on/collection.rb b/lib/acts_as_taggable_on/acts_as_taggable_on/collection.rb
index be7336afd..72d359a67 100644
--- a/lib/acts_as_taggable_on/acts_as_taggable_on/collection.rb
+++ b/lib/acts_as_taggable_on/acts_as_taggable_on/collection.rb
@@ -53,6 +53,7 @@ def tags_on(context, options = {})
       #                       * :order      - A piece of SQL to order by. Eg 'tags.count desc' or 'taggings.created_at desc'
       #                       * :on         - Scope the find to only include a certain context
       def all_tags(options = {})
+        options = options.dup
         options.assert_valid_keys :start_at, :end_at, :conditions, :order, :limit, :on
 
         ## Generate conditions:
@@ -87,6 +88,7 @@ def all_tags(options = {})
       #                       * :at_most    - Exclude tags with a frequency greater than the given value
       #                       * :on         - Scope the find to only include a certain context
       def all_tag_counts(options = {})
+        options = options.dup
         options.assert_valid_keys :start_at, :end_at, :conditions, :at_least, :at_most, :order, :limit, :on, :id
 
         ## Generate conditions:
diff --git a/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb b/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
index 59b0c9780..dcf02a4a8 100644
--- a/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
+++ b/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
@@ -83,6 +83,7 @@ def grouped_column_names_for(object)
       #   User.tagged_with("awesome", "cool", :owned_by => foo ) # Users that are tagged with just awesome and cool by 'foo'
       def tagged_with(tags, options = {})
         tag_list = ActsAsTaggableOn::TagList.from(tags)
+        options = options.dup
         empty_result = where('1 = 0')
 
         return empty_result if tag_list.empty?
diff --git a/lib/acts_as_taggable_on/acts_as_taggable_on/related.rb b/lib/acts_as_taggable_on/acts_as_taggable_on/related.rb
index 153bd57bb..9346fd6f6 100644
--- a/lib/acts_as_taggable_on/acts_as_taggable_on/related.rb
+++ b/lib/acts_as_taggable_on/acts_as_taggable_on/related.rb
@@ -41,7 +41,7 @@ def matching_contexts_for(search_context, result_context, klass, options = {})
     end
 
     def related_tags_for(context, klass, options = {})
-      tags_to_ignore = Array.wrap(options.delete(:ignore)).map(&:to_s) || []
+      tags_to_ignore = Array.wrap(options[:ignore]).map(&:to_s) || []
       tags_to_find = tags_on(context).map { |t| t.name }.reject { |t| tags_to_ignore.include? t }
       related_where(klass, ["#{exclude_self(klass, id)} #{klass.table_name}.#{klass.primary_key} = #{ActsAsTaggableOn::Tagging.table_name}.taggable_id AND #{ActsAsTaggableOn::Tagging.table_name}.taggable_type = '#{klass.base_class}' AND #{ActsAsTaggableOn::Tagging.table_name}.tag_id = #{ActsAsTaggableOn::Tag.table_name}.#{ActsAsTaggableOn::Tag.primary_key} AND #{ActsAsTaggableOn::Tag.table_name}.name IN (?)", tags_to_find])
     end
diff --git a/spec/acts_as_taggable_on/taggable_spec.rb b/spec/acts_as_taggable_on/taggable_spec.rb
index 887a925d7..13f48c590 100644
--- a/spec/acts_as_taggable_on/taggable_spec.rb
+++ b/spec/acts_as_taggable_on/taggable_spec.rb
@@ -494,6 +494,12 @@
     end
   end
 
+  it 'should options key not be deleted' do
+    options = {:exclude => true}
+    TaggableModel.tagged_with("foo", options)
+    expect(options).to eq({:exclude => true})
+  end
+
   context 'Duplicates' do
     context 'should not create duplicate taggings' do
       let(:bob) { TaggableModel.create(name: 'Bob') }