diff --git a/lib/spdylay_session.h b/lib/spdylay_session.h
index 18886d38..4298f756 100644
--- a/lib/spdylay_session.h
+++ b/lib/spdylay_session.h
@@ -161,6 +161,12 @@ int spdylay_session_on_syn_reply_received(spdylay_session *session,
 int spdylay_session_on_rst_stream_received(spdylay_session *session,
                                            spdylay_frame *frame);
 
+/*
+ * Called when PING is received. Received frame is |frame|.
+ */
+int spdylay_session_on_ping_received(spdylay_session *session,
+                                     spdylay_frame *frame);
+
 /*
  * Called when HEADERS is recieved. Received frame is |frame|.
  */
diff --git a/tests/spdylay_session_test.c b/tests/spdylay_session_test.c
index bdb6c422..e78d6b6b 100644
--- a/tests/spdylay_session_test.c
+++ b/tests/spdylay_session_test.c
@@ -413,7 +413,6 @@ void test_spdylay_submit_response()
     NULL
   };
   const char *nv[] = { NULL };
-  spdylay_stream *stream;
   int32_t stream_id = 2;
   spdylay_data_source source;
   spdylay_data_provider data_prd = {
@@ -442,7 +441,6 @@ void test_spdylay_session_reply_fail()
     NULL
   };
   const char *nv[] = { NULL };
-  spdylay_stream *stream;
   int32_t stream_id = 2;
   spdylay_data_source source;
   spdylay_data_provider data_prd = {
@@ -553,7 +551,6 @@ void test_spdylay_session_on_ping_received()
     on_ping_recv_callback
   };
   my_user_data user_data;
-  const char *nv[] = { NULL };
   spdylay_frame frame;
   spdylay_outbound_item *top;
   uint32_t unique_id;