diff --git a/CMakeLists.txt b/CMakeLists.txt
index ace97d09f..b41090d5f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,8 +10,6 @@ if (APPLE)
   enable_language(OBJC)
 endif()
 
-set(CMAKE_C_EXTENSIONS OFF)
-
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_EXTENSIONS OFF)