diff --git a/src/plugins/qmldesigner/qmldesignerplugin.qbs b/src/plugins/qmldesigner/qmldesignerplugin.qbs
index 3d73f1c05e1..8dc09339034 100644
--- a/src/plugins/qmldesigner/qmldesignerplugin.qbs
+++ b/src/plugins/qmldesigner/qmldesignerplugin.qbs
@@ -811,6 +811,11 @@ Project {
                 "pathtool/pathtool.h",
                 "pathtool/pathtoolview.cpp",
                 "pathtool/pathtoolview.h",
+                "previewtooltip/previewimagetooltip.cpp",
+                "previewtooltip/previewimagetooltip.h",
+                "previewtooltip/previewimagetooltip.ui",
+                "previewtooltip/previewtooltipbackend.cpp",
+                "previewtooltip/previewtooltipbackend.h",
                 "richtexteditor/hyperlinkdialog.cpp",
                 "richtexteditor/hyperlinkdialog.h",
                 "richtexteditor/hyperlinkdialog.ui",