diff --git a/src/plugins/debugger/qml/qml.pri b/src/plugins/debugger/qml/qml.pri
index 50629f35e18592063b9b60b8b5b1b7875b682c69..805d463546ec9664c6daa9d132c091056fd690be 100644
--- a/src/plugins/debugger/qml/qml.pri
+++ b/src/plugins/debugger/qml/qml.pri
@@ -1,5 +1,5 @@
 include(../../../private_headers.pri)
-exists(${QT_PRIVATE_HEADERS}/QtDeclarative/private/qdeclarativecontext_p.h) {
+exists($${QT_PRIVATE_HEADERS}/QtDeclarative/private/qdeclarativecontext_p.h) {
     HEADERS += \
         $$PWD/qmlengine.h \
         $$PWD/canvasframerate.h \