diff --git a/compiler/cpp/src/thrift/parse/t_field.h b/compiler/cpp/src/thrift/parse/t_field.h
index 4be8770..f0a607d 100644
--- a/compiler/cpp/src/thrift/parse/t_field.h
+++ b/compiler/cpp/src/thrift/parse/t_field.h
@@ -41,6 +41,7 @@
     : type_(type),
       name_(name),
       key_(0),
+	  req_(T_OPT_IN_REQ_OUT),
       value_(nullptr),
       xsd_optional_(false),
       xsd_nillable_(false),