diff --git a/tutorial/tutorial.thrift b/tutorial/tutorial.thrift
index 3ea496c..3150151 100644
--- a/tutorial/tutorial.thrift
+++ b/tutorial/tutorial.thrift
@@ -63,6 +63,7 @@
  * target languages.
  */
 namespace cpp tutorial
+namespace d tutorial
 namespace java tutorial
 namespace php tutorial
 namespace perl tutorial