diff --git a/CMakeLists.txt b/CMakeLists.txt
index b6161167cf..cf55d49e7b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,7 +131,6 @@ set( CMAKE_POSITION_INDEPENDENT_CODE ON )
 
 # Global setting: Use C++11
 set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)