diff --git a/lib/httparty/net_digest_auth.rb b/lib/httparty/net_digest_auth.rb
index 777733b..e97f818 100644
--- a/lib/httparty/net_digest_auth.rb
+++ b/lib/httparty/net_digest_auth.rb
@@ -84,11 +84,11 @@ module Net
       end
 
       def opaque_present?
-        @response.has_key?('opaque') and !@response['opaque'].empty?
+        @response.has_key?('opaque') && !@response['opaque'].empty?
       end
 
       def qop_present?
-        @response.has_key?('qop') and !@response['qop'].empty?
+        @response.has_key?('qop') && !@response['qop'].empty?
       end
 
       def random
diff --git a/lib/httparty/request.rb b/lib/httparty/request.rb
index ad16764..b7ce090 100644
--- a/lib/httparty/request.rb
+++ b/lib/httparty/request.rb
@@ -263,7 +263,7 @@ module HTTParty
         self.path = last_response['location']
         self.redirect = true
         if last_response.class == Net::HTTPSeeOther
-          unless options[:maintain_method_across_redirects] and options[:resend_on_redirect]
+          unless options[:maintain_method_across_redirects] && options[:resend_on_redirect]
             self.http_method = Net::HTTP::Get
           end
         else