diff --git a/compiler/cpp/src/thrifty.yy b/compiler/cpp/src/thrifty.yy
index 68384be..1ad0c35 100644
--- a/compiler/cpp/src/thrifty.yy
+++ b/compiler/cpp/src/thrifty.yy
@@ -186,9 +186,12 @@
  */
 
 Program:
-  HeaderList DefinitionList
+  DocTextOptional HeaderList DefinitionList
     {
       pdebug("Program -> Headers DefinitionList");
+      if ($1 != NULL) {
+        g_program->set_doc($1);
+      }
     }
 
 HeaderList: