diff --git a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
index 0586b1b420c..dd7491eefaa 100644
--- a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
+++ b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
@@ -1324,6 +1324,8 @@ LibraryInfo ModelManagerInterface::builtins(const Document::Ptr &doc) const
     ProjectInfo info = projectInfoForPath(doc->path());
     if (!info.isValid())
         return LibraryInfo();
+    if (!info.qtQmlPath.isEmpty())
+        return m_validSnapshot.libraryInfo(info.qtQmlPath);
     return m_validSnapshot.libraryInfo(info.qtImportsPath);
 }
 
diff --git a/src/libs/qmljs/qmljsplugindumper.cpp b/src/libs/qmljs/qmljsplugindumper.cpp
index 36bf522ebc8..558b25bc4a1 100644
--- a/src/libs/qmljs/qmljsplugindumper.cpp
+++ b/src/libs/qmljs/qmljsplugindumper.cpp
@@ -93,34 +93,35 @@ void PluginDumper::scheduleMaybeRedumpBuiltins(const QmlJS::ModelManagerInterfac
 
 void PluginDumper::onLoadBuiltinTypes(const QmlJS::ModelManagerInterface::ProjectInfo &info, bool force)
 {
-    if (info.qmlDumpPath.isEmpty() || info.qtImportsPath.isEmpty())
+    if (info.qmlDumpPath.isEmpty() || (info.qtImportsPath.isEmpty() && info.qtQmlPath.isEmpty()))
         return;
 
-    const QString importsPath = QDir::cleanPath(info.qtImportsPath);
+    const QString baseImportsPath = info.qtQmlPath.isEmpty() ? info.qtImportsPath : info.qtQmlPath;
+    const QString importsPath = QDir::cleanPath(baseImportsPath);
     if (m_runningQmldumps.values().contains(importsPath))
         return;
 
     LibraryInfo builtinInfo;
     if (!force) {
         const Snapshot snapshot = m_modelManager->snapshot();
-        builtinInfo = snapshot.libraryInfo(info.qtImportsPath);
+        builtinInfo = snapshot.libraryInfo(baseImportsPath);
         if (builtinInfo.isValid())
             return;
     }
     builtinInfo = LibraryInfo(LibraryInfo::Found);
     m_modelManager->updateLibraryInfo(info.qtImportsPath, builtinInfo);
 
-    // prefer QTDIR/imports/builtins.qmltypes if available
-    const QString builtinQmltypesPath = info.qtImportsPath + QLatin1String("/builtins.qmltypes");
+    // prefer QTDIR/qml/builtins.qmltypes if available
+    const QString builtinQmltypesPath = baseImportsPath + QLatin1String("/builtins.qmltypes");
     if (QFile::exists(builtinQmltypesPath)) {
-        loadQmltypesFile(QStringList(builtinQmltypesPath), info.qtImportsPath, builtinInfo);
+        loadQmltypesFile(QStringList(builtinQmltypesPath), baseImportsPath, builtinInfo);
         return;
     }
     // QTDIR/imports/QtQuick1/builtins.qmltypes was used in developer builds of 5.0.0, 5.0.1
     const QString builtinQmltypesPath2 = info.qtImportsPath
             + QLatin1String("/QtQuick1/builtins.qmltypes");
     if (QFile::exists(builtinQmltypesPath2)) {
-        loadQmltypesFile(QStringList(builtinQmltypesPath2), info.qtImportsPath, builtinInfo);
+        loadQmltypesFile(QStringList(builtinQmltypesPath2), baseImportsPath, builtinInfo);
         return;
     }
 
@@ -131,8 +132,8 @@ void PluginDumper::onLoadBuiltinTypes(const QmlJS::ModelManagerInterface::Projec
     connect(process, SIGNAL(error(QProcess::ProcessError)), SLOT(qmlPluginTypeDumpError(QProcess::ProcessError)));
     QStringList args(QLatin1String("--builtins"));
     process->start(info.qmlDumpPath, args);
-    m_runningQmldumps.insert(process, info.qtImportsPath);
-    m_qtToInfo.insert(info.qtImportsPath, info);
+    m_runningQmldumps.insert(process, baseImportsPath);
+    m_qtToInfo.insert(baseImportsPath, info);
 }
 
 static QString makeAbsolute(const QString &path, const QString &base)