diff --git a/test/FastbinaryTest.py b/test/FastbinaryTest.py
index b27612b..04b3e44 100755
--- a/test/FastbinaryTest.py
+++ b/test/FastbinaryTest.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 r"""
-thrift -py DebugProtoTest.thrift
+thrift --gen py DebugProtoTest.thrift
 ./FastbinaryTest.py
 """