diff --git a/lib/sphinx/integration/railtie.rb b/lib/sphinx/integration/railtie.rb
index c5b1f7d..f121769 100644
--- a/lib/sphinx/integration/railtie.rb
+++ b/lib/sphinx/integration/railtie.rb
@@ -40,9 +40,8 @@ class Railtie < Rails::Railtie
     end
 
     initializer 'sphinx_integration.rspec' do
-      if defined?(::RSpec)
-        require 'rspec/version'
-        if Gem::Version.new(RSpec::Version::STRING) >= Gem::Version.new('3.0.0')
+      if defined?(::RSpec::Core)
+        if Gem::Version.new(RSpec::Core::Version::STRING) >= Gem::Version.new('3.0.0')
           RSpec.configure do |c|
             c.before(:each) do |example|
               unless example.metadata.fetch(:with_sphinx, false)