diff --git a/.qmake.conf b/.qmake.conf
index ceb08b1dcb2..a695f3792de 100644
--- a/.qmake.conf
+++ b/.qmake.conf
@@ -1 +1 @@
-CONFIG += c++14
+CONFIG += c++11
diff --git a/tests/unit/unittest/unittest.pro b/tests/unit/unittest/unittest.pro
index 0502ec7aacc..06b08dd2907 100644
--- a/tests/unit/unittest/unittest.pro
+++ b/tests/unit/unittest/unittest.pro
@@ -6,7 +6,7 @@ include(creator_dependency.pri)
 include(benchmark_dependency.pri)
 
 QT += core network testlib widgets
-CONFIG += console testcase object_parallel_to_source
+CONFIG += console c++14 testcase object_parallel_to_source
 CONFIG -= app_bundle
 
 OBJECTS_DIR = $$OUT_PWD/obj # workaround for qmake bug in object_parallel_to_source