diff --git a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
index 4f417d77d8..9d22f0b701 100644
--- a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
+++ b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
@@ -664,4 +664,6 @@ void QGtk3FontDialogHelper::applyOptions()
 
 QT_END_NAMESPACE
 
+#include "moc_qgtk3dialoghelpers.cpp"
+
 #include "qgtk3dialoghelpers.moc"
diff --git a/src/plugins/platformthemes/gtk3/qgtk3menu.cpp b/src/plugins/platformthemes/gtk3/qgtk3menu.cpp
index 3e00d9610f..8726708917 100644
--- a/src/plugins/platformthemes/gtk3/qgtk3menu.cpp
+++ b/src/plugins/platformthemes/gtk3/qgtk3menu.cpp
@@ -483,3 +483,5 @@ void QGtk3Menu::onHide(GtkWidget *, void *data)
 }
 
 QT_END_NAMESPACE
+
+#include "moc_qgtk3menu.cpp"