diff --git a/config.tests/unix/icu/icu.pro b/config.tests/unix/icu/icu.pro
index f92d7cdfb8..3146f94de7 100644
--- a/config.tests/unix/icu/icu.pro
+++ b/config.tests/unix/icu/icu.pro
@@ -1,5 +1,6 @@
 SOURCES = icu.cpp
 CONFIG += console
 CONFIG -= qt dylib
+CONFIG += c++11
 
 include($$PWD/../../../src/3rdparty/icu_dependency.pri)