diff --git a/tests/auto/utils/qtcprocess/qtcprocess.pro b/tests/auto/utils/qtcprocess/qtcprocess.pro
index a4e8679d990..e3d92a1d073 100644
--- a/tests/auto/utils/qtcprocess/qtcprocess.pro
+++ b/tests/auto/utils/qtcprocess/qtcprocess.pro
@@ -5,6 +5,6 @@ win32:DEFINES += _CRT_SECURE_NO_WARNINGS
 
 TEST_RELATIVE_LIBEXEC_PATH = $$relative_path($$IDE_LIBEXEC_PATH, $$OUT_PWD)
 win32:TEST_RELATIVE_LIBEXEC_PATH=../$$TEST_RELATIVE_LIBEXEC_PATH
-DEFINES += TEST_RELATIVE_LIBEXEC_PATH=\\\"$$TEST_RELATIVE_LIBEXEC_PATH\\\"
+DEFINES += 'TEST_RELATIVE_LIBEXEC_PATH="\\\"$$TEST_RELATIVE_LIBEXEC_PATH\\\""'
 
 SOURCES +=  tst_qtcprocess.cpp