diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c3b555a4df..6c5d4d80c96 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,7 @@
 # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
+# We require CMake >= 3.2
 cmake_minimum_required(VERSION 3.8)
 
 # add this options before PROJECT keyword