diff --git a/lib/nghttp2_session.c b/lib/nghttp2_session.c
index c4a21964..3004e521 100644
--- a/lib/nghttp2_session.c
+++ b/lib/nghttp2_session.c
@@ -3674,6 +3674,11 @@ int nghttp2_session_on_priority_received(nghttp2_session *session,
                                              "PRIORITY: stream_id == 0");
   }
 
+  if (frame->priority.pri_spec.stream_id == frame->hd.stream_id) {
+    return nghttp2_session_terminate_session_with_reason(
+        session, NGHTTP2_PROTOCOL_ERROR, "depend on itself");
+  }
+
   if (!session->server) {
     /* Re-prioritization works only in server */
     return session_call_on_frame_received(session, frame);
diff --git a/tests/nghttp2_session_test.c b/tests/nghttp2_session_test.c
index 7731f2fc..39cf8654 100644
--- a/tests/nghttp2_session_test.c
+++ b/tests/nghttp2_session_test.c
@@ -2163,6 +2163,22 @@ void test_nghttp2_session_on_priority_received(void) {
 
   nghttp2_frame_priority_free(&frame.priority);
   nghttp2_session_del(session);
+
+  /* Check again dep_stream_id == stream_id, and stream_id is idle */
+  nghttp2_session_server_new(&session, &callbacks, &user_data);
+
+  nghttp2_priority_spec_init(&pri_spec, 1, 16, 0);
+
+  nghttp2_frame_priority_init(&frame.priority, 1, &pri_spec);
+
+  CU_ASSERT(0 == nghttp2_session_on_priority_received(session, &frame));
+
+  item = nghttp2_session_get_next_ob_item(session);
+
+  CU_ASSERT(NGHTTP2_GOAWAY == item->frame.hd.type);
+
+  nghttp2_frame_priority_free(&frame.priority);
+  nghttp2_session_del(session);
 }
 
 void test_nghttp2_session_on_rst_stream_received(void) {