diff --git a/cgbinder.pxd b/cgbinder.pxd
index c1ceea4..cc495b6 100644
--- a/cgbinder.pxd
+++ b/cgbinder.pxd
@@ -47,6 +47,7 @@ cdef extern from "gbinder/gbinder_servicemanager.h":
     ctypedef void (*GBinderServiceManagerAddServiceFunc)(GBinderServiceManager* sm, int status, void* user_data)
     ctypedef void (*GBinderServiceManagerRegistrationFunc)(GBinderServiceManager* sm, const char* name, void* user_data)
 
+    GBinderServiceManager* gbinder_servicemanager_new2(const char* dev, const char* sm_protocol, const char* rpc_protocol)
     GBinderServiceManager* gbinder_servicemanager_new(const char* dev)
     GBinderLocalObject* gbinder_servicemanager_new_local_object(GBinderServiceManager* sm, const char* iface, GBinderLocalTransactFunc handler, void* user_data)
     GBinderLocalObject* gbinder_servicemanager_new_local_object2(GBinderServiceManager* sm, const char* const* ifaces, GBinderLocalTransactFunc handler, void* user_data)
diff --git a/gbinder.pyx b/gbinder.pyx
index fdea280..0e316ed 100644
--- a/gbinder.pyx
+++ b/gbinder.pyx
@@ -526,8 +526,11 @@ cdef class ServiceManager:
     cdef cgbinder.GBinderServiceManager* _sm
     cdef public object func, list_func, get_service_func
 
-    def __cinit__(self, dev):
-        self._sm = cgbinder.gbinder_servicemanager_new(ensure_binary(dev))
+    def __cinit__(self, dev, sm_protocol=None, rpc_protocol=None):
+        if sm_protocol and rpc_protocol:
+            self._sm = cgbinder.gbinder_servicemanager_new2(ensure_binary(dev), ensure_binary(sm_protocol), ensure_binary(rpc_protocol))
+        else:
+            self._sm = cgbinder.gbinder_servicemanager_new(ensure_binary(dev))
 
     def __dealloc__(self):
         if self._sm is not NULL:
diff --git a/setup.py b/setup.py
index cf3a42e..ed2b1ed 100644
--- a/setup.py
+++ b/setup.py
@@ -19,6 +19,8 @@ file_ext = ".pyx" if USE_CYTHON else ".c"
 
 extension_kwargs = { 'sources': ["gbinder" + file_ext] }
 extension_kwargs = pkgconfig('libgbinder', extension_kwargs)
+if None in extension_kwargs:
+    del extension_kwargs[None]
 extensions = [Extension('gbinder', **extension_kwargs)]
 
 if USE_CYTHON: