diff --git a/lib/omniauth.rb b/lib/omniauth.rb
index a94d975..9b53cd2 100644
--- a/lib/omniauth.rb
+++ b/lib/omniauth.rb
@@ -161,7 +161,7 @@ module OmniAuth
       return OmniAuth.config.camelizations[word.to_s] if OmniAuth.config.camelizations[word.to_s]
 
       if first_letter_in_uppercase
-        word.to_s.gsub(/\/(.?)/) { '::' + Regexp.last_match[1].upcase }.gsub(/(^|_)(.)/) { Regexp.last_match[2].upcase }
+        word.to_s.gsub(%r{/(.?)}) { '::' + Regexp.last_match[1].upcase }.gsub(/(^|_)(.)/) { Regexp.last_match[2].upcase }
       else
         word.first + camelize(word)[1..-1]
       end
diff --git a/lib/omniauth/strategy.rb b/lib/omniauth/strategy.rb
index dcea8d9..b1839d2 100644
--- a/lib/omniauth/strategy.rb
+++ b/lib/omniauth/strategy.rb
@@ -394,7 +394,7 @@ module OmniAuth
       options[:setup_path] || "#{path_prefix}/#{name}/setup"
     end
 
-    CURRENT_PATH_REGEX = /\/$/
+    CURRENT_PATH_REGEX = %r{/$}
     EMPTY_STRING       = ''.freeze
     def current_path
       @current_path ||= request.path_info.downcase.sub(CURRENT_PATH_REGEX, EMPTY_STRING)