diff --git a/lib/sift/filtrator.rb b/lib/sift/filtrator.rb
index 36cc6b0..86bce57 100644
--- a/lib/sift/filtrator.rb
+++ b/lib/sift/filtrator.rb
@@ -46,7 +46,7 @@ def active_sorts_hash
 
     def active_filters
       filters.select do |filter|
-        filter_params[filter.param].present? || filter.default || filter.always_active?
+        filter_params.include?(filter.param) || filter.default || filter.always_active?
       end
     end
   end
diff --git a/test/filtrator_test.rb b/test/filtrator_test.rb
index 99bb406..b277a52 100644
--- a/test/filtrator_test.rb
+++ b/test/filtrator_test.rb
@@ -18,6 +18,19 @@ class FiltratorTest < ActiveSupport::TestCase
     assert_equal Post.where(id: post.id), collection
   end
 
+  test "it filters by boolean field even when the value is false" do
+    Post.create!(visible: false)
+    filter = Sift::Filter.new(:visible, :boolean, :visible, nil)
+
+    collection = Sift::Filtrator.filter(
+      Post.all,
+      { filters: { visible: false } },
+      [filter],
+    )
+
+    assert_equal Post.where(visible: false), collection
+  end
+
   test "it will not try to make a range out of a string field that includes ..." do
     post = Post.create!(title: "wow...man")
     filter = Sift::Filter.new(:title, :string, :title, nil)