diff --git a/tests/unit/unittest/CMakeLists.txt b/tests/unit/unittest/CMakeLists.txt
index 0b2cd29518d..41986b1dfb0 100644
--- a/tests/unit/unittest/CMakeLists.txt
+++ b/tests/unit/unittest/CMakeLists.txt
@@ -19,6 +19,7 @@ file(RELATIVE_PATH RELATIVE_TEST_PATH "${PROJECT_BINARY_DIR}" "${CMAKE_CURRENT_B
 file(RELATIVE_PATH TEST_RELATIVE_LIBEXEC_PATH "/${RELATIVE_TEST_PATH}" "/${IDE_LIBEXEC_PATH}")
 
 add_qtc_test(unittest GTEST
+  PROPERTIES COMPILE_WARNING_AS_ERROR ON
   INCLUDES
     BEFORE "../mockup"
     BEFORE "../mockup/qmldesigner/designercore/include"