diff --git a/txupnp/scpd.py b/txupnp/scpd.py
index 486e6ec..71ed494 100644
--- a/txupnp/scpd.py
+++ b/txupnp/scpd.py
@@ -86,6 +86,8 @@ class _SCPDCommand(object):
         )
         xml_response = yield response.content()
         response = self.extract_response(self.extract_body(xml_response))
+        if not response:
+            log.error("empty response to %s\n%s", self.method, xml_response)
         defer.returnValue(response)
 
     @staticmethod
diff --git a/txupnp/util.py b/txupnp/util.py
index c032252..95e9c72 100644
--- a/txupnp/util.py
+++ b/txupnp/util.py
@@ -49,15 +49,6 @@ def get_lan_info():
     return iface_name, gateway_address, lan_addr
 
 
-def find_inner_service_info(service, name):
-    if isinstance(service, dict):
-        return service
-    for s in service:
-        if name == s['serviceType']:
-            return s
-    raise IndexError(name)
-
-
 def _return_types(*types):
     def _return_types_wrapper(fn):
         @functools.wraps(fn)