diff --git a/compiler/cpp/src/thrift/generate/t_rs_generator.cc b/compiler/cpp/src/thrift/generate/t_rs_generator.cc
index 5cd304b..78794a5 100644
--- a/compiler/cpp/src/thrift/generate/t_rs_generator.cc
+++ b/compiler/cpp/src/thrift/generate/t_rs_generator.cc
@@ -2831,7 +2831,7 @@
     return;
   }
 
-  generate_docstring_comment(f_gen_, "", "///", tdoc->get_doc(), "");
+  generate_docstring_comment(f_gen_, "", "/// ", tdoc->get_doc(), "");
 }
 
 void t_rs_generator::render_rift_error(