diff --git a/lib/rb/benchmark/gen-rb/BenchmarkService.rb b/lib/rb/benchmark/gen-rb/BenchmarkService.rb
index 7d39882..2c3ae4f 100644
--- a/lib/rb/benchmark/gen-rb/BenchmarkService.rb
+++ b/lib/rb/benchmark/gen-rb/BenchmarkService.rb
@@ -52,6 +52,9 @@
           FIELDS = {
             N => {:type => Thrift::Types::BYTE, :name => 'n'}
           }
+          def validate
+          end
+
         end
 
         class Fibonacci_result
@@ -62,6 +65,9 @@
           FIELDS = {
             SUCCESS => {:type => Thrift::Types::I32, :name => 'success'}
           }
+          def validate
+          end
+
         end
 
       end
diff --git a/lib/rb/lib/thrift/struct.rb b/lib/rb/lib/thrift/struct.rb
index c530b33..a51f209 100644
--- a/lib/rb/lib/thrift/struct.rb
+++ b/lib/rb/lib/thrift/struct.rb
@@ -82,6 +82,7 @@
     end
 
     def read(iprot)
+      validate
       # TODO(kevinclark): Make sure transport is C readable
       if iprot.respond_to?(:decode_binary)
         iprot.decode_binary(self, iprot.trans)
@@ -98,6 +99,7 @@
     end
 
     def write(oprot)
+      validate
       if oprot.respond_to?(:encode_binary)
         # TODO(kevinclark): Clean this so I don't have to access the transport.
         oprot.trans.write oprot.encode_binary(self)
diff --git a/lib/rb/spec/gen-rb/NonblockingService.rb b/lib/rb/spec/gen-rb/NonblockingService.rb
index ee5fae1..a886805 100644
--- a/lib/rb/spec/gen-rb/NonblockingService.rb
+++ b/lib/rb/spec/gen-rb/NonblockingService.rb
@@ -121,6 +121,9 @@
           FIELDS = {
             ENGLISH => {:type => Thrift::Types::BOOL, :name => 'english'}
           }
+          def validate
+          end
+
         end
 
         class Greeting_result
@@ -131,6 +134,9 @@
           FIELDS = {
             SUCCESS => {:type => Thrift::Types::STRUCT, :name => 'success', :class => Hello}
           }
+          def validate
+          end
+
         end
 
         class Block_args
@@ -139,6 +145,9 @@
           FIELDS = {
 
           }
+          def validate
+          end
+
         end
 
         class Block_result
@@ -149,6 +158,9 @@
           FIELDS = {
             SUCCESS => {:type => Thrift::Types::BOOL, :name => 'success'}
           }
+          def validate
+          end
+
         end
 
         class Unblock_args
@@ -159,6 +171,9 @@
           FIELDS = {
             N => {:type => Thrift::Types::I32, :name => 'n'}
           }
+          def validate
+          end
+
         end
 
         class Unblock_result
@@ -167,6 +182,9 @@
           FIELDS = {
 
           }
+          def validate
+          end
+
         end
 
         class Shutdown_args
@@ -175,6 +193,9 @@
           FIELDS = {
 
           }
+          def validate
+          end
+
         end
 
         class Shutdown_result
@@ -183,6 +204,9 @@
           FIELDS = {
 
           }
+          def validate
+          end
+
         end
 
         class Sleep_args
@@ -193,6 +217,9 @@
           FIELDS = {
             SECONDS => {:type => Thrift::Types::DOUBLE, :name => 'seconds'}
           }
+          def validate
+          end
+
         end
 
         class Sleep_result
@@ -201,6 +228,9 @@
           FIELDS = {
 
           }
+          def validate
+          end
+
         end
 
       end
diff --git a/lib/rb/spec/gen-rb/ThriftSpec_types.rb b/lib/rb/spec/gen-rb/ThriftSpec_types.rb
index 0251524..6e5fed4 100644
--- a/lib/rb/spec/gen-rb/ThriftSpec_types.rb
+++ b/lib/rb/spec/gen-rb/ThriftSpec_types.rb
@@ -15,6 +15,9 @@
       FIELDS = {
         GREETING => {:type => Thrift::Types::STRING, :name => 'greeting', :default => 'hello world'}
       }
+      def validate
+      end
+
     end
 
     class Foo
@@ -47,6 +50,9 @@
         ]), :element => {:type => Thrift::Types::I16}},
         OPT_STRING => {:type => Thrift::Types::STRING, :name => 'opt_string', :optional => true}
       }
+      def validate
+      end
+
     end
 
     class BoolStruct
@@ -57,6 +63,9 @@
       FIELDS = {
         YESNO => {:type => Thrift::Types::BOOL, :name => 'yesno', :default => true}
       }
+      def validate
+      end
+
     end
 
     class SimpleList