diff --git a/tests/unit/unittest/unittest.pro b/tests/unit/unittest/unittest.pro
index 4c18b07cafb..de135d251eb 100644
--- a/tests/unit/unittest/unittest.pro
+++ b/tests/unit/unittest/unittest.pro
@@ -15,6 +15,7 @@ DEFINES += \
     CLANGBACKEND_TESTS \
     DONT_CHECK_MESSAGE_COUNTER \
     TESTDATA_DIR=\"R\\\"xxx($$PWD/data)xxx\\\"\"
+win32-msvc*:QMAKE_CXXFLAGS_WARN_ON -= -w34100 # 'unreferenced formal parameter' in MATCHER_* functions
 win32:DEFINES += ECHOSERVER=\"R\\\"xxx($$OUT_PWD/../echo)xxx\\\"\"
 unix: DEFINES += ECHOSERVER=\"R\\\"xxx($$OUT_PWD/../echoserver/echo)xxx\\\"\"