diff --git a/src/libs/qmljs/parser/qmljslexer.cpp b/src/libs/qmljs/parser/qmljslexer.cpp
index 97f33bdda60..32bd86c592a 100644
--- a/src/libs/qmljs/parser/qmljslexer.cpp
+++ b/src/libs/qmljs/parser/qmljslexer.cpp
@@ -35,9 +35,7 @@
 #include <QtCore/qdebug.h>
 #include <QtCore/QScopedValueRollback>
 
-QT_BEGIN_NAMESPACE
-Q_CORE_EXPORT double qstrtod(const char *s00, char const **se, bool *ok);
-QT_END_NAMESPACE
+#include <QtCore/private/qlocale_tools_p.h>
 
 QT_QML_BEGIN_NAMESPACE
 
diff --git a/src/libs/qmljs/qmljs-lib.pri b/src/libs/qmljs/qmljs-lib.pri
index c9800eab810..5c14ef9da31 100644
--- a/src/libs/qmljs/qmljs-lib.pri
+++ b/src/libs/qmljs/qmljs-lib.pri
@@ -84,4 +84,4 @@ contains(QT, gui) {
         $$PWD/qmljsreformatter.h
 }
 
-QT += xml
+QT += xml core-private