diff --git a/capnp/_gen.py b/capnp/_gen.py
index e86e86c..52c6181 100644
--- a/capnp/_gen.py
+++ b/capnp/_gen.py
@@ -38,7 +38,7 @@ def main():
     with open(filename, 'w') as out:
       out.write(module.render(code=file_code, file=f, include_dir=include_dir))
 
-  setup = env.get_template('setup.py')
+  setup = env.get_template('setup.py.tmpl')
   with open('setup_capnp.py', 'w') as out:
     out.write(setup.render(code=code))
   print('You now need to build the cython module by running `python setup_capnp.py build_ext --inplace`.')
diff --git a/capnp/templates/setup.py b/capnp/templates/setup.py.tmpl
similarity index 90%
rename from capnp/templates/setup.py
rename to capnp/templates/setup.py.tmpl
index 29c0b2a..7fbcaa0 100644
--- a/capnp/templates/setup.py
+++ b/capnp/templates/setup.py.tmpl
@@ -5,7 +5,7 @@ import os
 import re
 
 
-files = [{% for file in code.requestedFiles %}"{{file.filename}}",{% endfor %}]
+files = [{% for f in code.requestedFiles %}"{{f.filename}}",{% endfor %}]
 
 for f in files:
   cpp_file = f + '.cpp'