diff --git a/perf/CMakeLists.txt b/perf/CMakeLists.txt
index a65165097e..466facaf3a 100644
--- a/perf/CMakeLists.txt
+++ b/perf/CMakeLists.txt
@@ -1,3 +1,4 @@
+# XXXX
 set(CMAKE_CXX_STANDARD 14)
 
 set(PERF_OUTPUT_DIR ${PROJECT_BINARY_DIR}/perf/output)