diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6775ef3..afe79593 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,9 @@ if (CMAKE_VERSION VERSION_LESS "3.1")
 else()
   set(CMAKE_CXX_STANDARD 11)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
-  set(CMAKE_CXX_EXTENSIONS OFF)
+  if(NOT CYGWIN)
+    set(CMAKE_CXX_EXTENSIONS OFF)
+  endif()
 endif()
 
 if (POLICY CMP0048)