diff --git a/CMakeLists.txt b/CMakeLists.txt
index d9dd181..99acd59 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,16 +16,12 @@ set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -march=native")
 include(CheckCXXCompilerFlag)
 CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
 CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
-if(COMPILER_SUPPORTS_CXX11)
+if(COMPILER_SUPPORTS_CXX14)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
    add_definitions(-DCOMPILEDWITHC11)
    message(STATUS "Using flag -std=c++14.")
-elseif(COMPILER_SUPPORTS_CXX0X)
-   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
-   add_definitions(-DCOMPILEDWITHC0X)
-   message(STATUS "Using flag -std=c++0x.")
 else()
-   message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
+   message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++14 support. Please use a different C++ compiler.")
 endif()
 
 LIST(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake_modules)