diff --git a/lib/capybara.rb b/lib/capybara.rb
index c2bf3a15..561e3e03 100644
--- a/lib/capybara.rb
+++ b/lib/capybara.rb
@@ -117,7 +117,7 @@ module Capybara
     # For example modifying the :button selector to also find divs styled
     # to look like buttons might look like this
     #
-    #     Capybara.modfiy_selector(:button) do
+    #     Capybara.modify_selector(:button) do
     #       xpath { |locator| XPath::HTML.button(locator).or(XPath::css('div.btn')[XPath::string.n.is(locator)]) }
     #     end
     #
diff --git a/spec/selector_spec.rb b/spec/selector_spec.rb
index 047d311f..61304a3e 100644
--- a/spec/selector_spec.rb
+++ b/spec/selector_spec.rb
@@ -29,7 +29,7 @@ RSpec.describe Capybara do
       end
     end
 
-    describe "modfiy_selector" do
+    describe "modify_selector" do
       it "allows modifying a selector" do
         el = string.find(:custom_selector, 'a')
         expect(el.tag_name).to eq 'div'