diff --git a/examples/qwidget-compositor/qwidget-compositor.pro b/examples/qwidget-compositor/qwidget-compositor.pro
index b681fb88bb693bebf470a5eaf1802840adcef954..3cf4a4a7e39c16f4243640eade903a447f51587c 100644
--- a/examples/qwidget-compositor/qwidget-compositor.pro
+++ b/examples/qwidget-compositor/qwidget-compositor.pro
@@ -11,6 +11,8 @@ CONFIG += use_pkgconfig
 #  the following line
 #include (../../src/qt-compositor/qt-compositor.pri)
 
+# to make QtCompositor/... style includes working without installing
+INCLUDEPATH += $$PWD/../../include
 
 CONFIG += qt warn_on debug  create_prl link_prl
 OBJECTS_DIR = .obj/release-shared
diff --git a/examples/qwindow-compositor/qwindow-compositor.pro b/examples/qwindow-compositor/qwindow-compositor.pro
index 3bae92dd61e678fa41a25ef16f0b32c5d718d5e4..07c6be37d3f4fe886e62c526342c9bab6367c154 100644
--- a/examples/qwindow-compositor/qwindow-compositor.pro
+++ b/examples/qwindow-compositor/qwindow-compositor.pro
@@ -28,6 +28,9 @@ QT += gui gui-private core-private
 
 QT += compositor
 
+# to make QtCompositor/... style includes working without installing
+INCLUDEPATH += $$PWD/../../include
+
 #  if you want to compile QtCompositor as part of the application
 #  instead of linking to it, remove the QT += compositor and uncomment
 #  the following line