diff --git a/compiler/cpp/src/generate/t_rb_generator.cc b/compiler/cpp/src/generate/t_rb_generator.cc
index f3d054d..d580eb3 100644
--- a/compiler/cpp/src/generate/t_rb_generator.cc
+++ b/compiler/cpp/src/generate/t_rb_generator.cc
@@ -302,6 +302,7 @@
     // agree and play nice.
     string name = capitalize((*c_iter)->get_name());
 
+    generate_rdoc(f_types_, *c_iter);
     f_types_ <<
       indent() << name << " = " << value << endl;
   }