diff --git a/plugin/plugin.pro b/plugin/plugin.pro
index f179d64..272623c 100644
--- a/plugin/plugin.pro
+++ b/plugin/plugin.pro
@@ -10,6 +10,7 @@ SOURCES     = simplestyle.cpp \
 TARGET      = simplestyleplugin
 
 INCLUDEPATH += /usr/include/tqt3
+INCLUDEPATH += /usr/include/tqt3/private
 INCLUDEPATH += /usr/include/tqt
 INCLUDEPATH += /opt/trinity/include
 LIBS += -L/usr/lib -ltqt -ltqt-mt -L /opt/trinity/lib -lDCOP -ltdecore -ltdeui -lkio