diff --git a/3rdparty/qtsingleapplication/CMakeLists.txt b/3rdparty/qtsingleapplication/CMakeLists.txt
index 239bbe05b..29f7844d5 100644
--- a/3rdparty/qtsingleapplication/CMakeLists.txt
+++ b/3rdparty/qtsingleapplication/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 2.6)
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++0x")
 
 set(SINGLEAPP-SOURCES
     qtlocalpeer.cpp