diff --git a/config.tests/mac/coreservices/coreservices.pro b/config.tests/mac/coreservices/coreservices.pro
index c9bf8eccd7e..6f7c07a4875 100644
--- a/config.tests/mac/coreservices/coreservices.pro
+++ b/config.tests/mac/coreservices/coreservices.pro
@@ -1,3 +1,3 @@
-SOURCES = coreservices.mm
+OBJECTIVE_SOURCES = coreservices.mm
 LIBS += -framework CoreServices
 CONFIG -= app_bundle qt