diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..fd2d3fa
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+stubs:
+	python -m grpc_tools.protoc -I./example --python_out=./example --grpc_python_out=./example --python_asyncgrpc_out=./example ./example/helloworld.proto
diff --git a/asyncgrpc/handler.py b/asyncgrpc/handler.py
index fc3a7fe..ba3254a 100644
--- a/asyncgrpc/handler.py
+++ b/asyncgrpc/handler.py
@@ -7,7 +7,7 @@ from concurrent.futures import Future
 import grpc
 
 
-Method = namedtuple('Method', 'name, input, output')
+Method = namedtuple('Method', 'name input_type output_type')
 
 
 def reduce_arity(values, func):
@@ -70,14 +70,14 @@ def create_handler(service, dependencies, functions, *, loop):
         func.__implements__.name: grpc.unary_unary_rpc_method_handler(
             make_sync(reduce_arity(dependencies, func), loop=loop),
             request_deserializer=(
-                func.__implements__.input.FromString
+                func.__implements__.input_type.FromString
             ),
             response_serializer=(
-                func.__implements__.output.SerializeToString
+                func.__implements__.output_type.SerializeToString
             ),
         )
         for func in functions
-        }
+    }
 
     return grpc.method_handlers_generic_handler(
         service.__service__,
diff --git a/asyncgrpc/plugin/main.py b/asyncgrpc/plugin/main.py
index 63eec80..5bde19b 100644
--- a/asyncgrpc/plugin/main.py
+++ b/asyncgrpc/plugin/main.py
@@ -8,6 +8,7 @@ from google.protobuf.compiler.plugin_pb2 import CodeGeneratorRequest
 from google.protobuf.compiler.plugin_pb2 import CodeGeneratorResponse
 
 from .. import handler
+from ..handler import Method
 
 
 SUFFIX = handler.__name__.split('.')[0]
@@ -41,7 +42,7 @@ def render(proto_file, package, imports, services):
     buf.add('# source: {}', proto_file)
     buf.add('# plugin: {}', __name__)
     buf.add('')
-    buf.add('from {} import {}', handler.__name__, handler.Method.__name__)
+    buf.add('from {} import {}', handler.__name__, Method.__name__)
     buf.add('')
     for mod in imports:
         buf.add('import {}', mod)
@@ -64,15 +65,9 @@ def render(proto_file, package, imports, services):
     return buf.content()
 
 
-Method = namedtuple('Method', 'name input_type output_type')
-
 Service = namedtuple('Service', 'name methods')
 
 
-def pp(*args):
-    print(*args, file=sys.stderr)
-
-
 def _get_proto(request, name):
     return next(f for f in request.proto_file if f.name == name)
 
@@ -81,10 +76,6 @@ def _proto2py(proto_name):
     return proto_name.replace('/', '.')[:-len('.proto')] + '_pb2'
 
 
-def _type2py(type_name):
-    return type_name.lstrip('.')
-
-
 def main():
     with os.fdopen(sys.stdin.fileno(), 'rb') as inp:
         request = CodeGeneratorRequest.FromString(inp.read())
diff --git a/example/Makefile b/example/Makefile
deleted file mode 100644
index 9075efe..0000000
--- a/example/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-stubs:
-	python -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. --python_asyncgrpc_out=. helloworld.proto
diff --git a/example/helloworld_pb2_asyncgrpc.py b/example/helloworld_pb2_asyncgrpc.py
index f8b4520..63fe690 100644
--- a/example/helloworld_pb2_asyncgrpc.py
+++ b/example/helloworld_pb2_asyncgrpc.py
@@ -1,4 +1,4 @@
-# Generated by the protocol buffer compiler.  DO NOT EDIT
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
 # source: helloworld.proto
 # plugin: asyncgrpc.plugin.main