diff --git a/CMakeLists.txt b/CMakeLists.txt
index 986ac107d3..f714397874 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,9 +29,9 @@ cmake_minimum_required(VERSION 2.8)
 # also from cmake's Modules dir, to not clash with per-project files.
 cmake_policy(SET CMP0017 NEW)
 
-# Use new behaviour with cmake >= 3.0:
+# Use new behaviour with cmake >= 3.1:
 # Only interpret if() arguments as variables or keywords when unquoted.
-if(CMAKE_VERSION VERSION_GREATER 3)
+if(CMAKE_VERSION VERSION_GREATER 3.1)
     cmake_policy(SET CMP0054 NEW)
 endif()