diff --git a/qtinterface/tqt.h b/qtinterface/tqt.h
index 55631d4..9971813 100644
--- a/qtinterface/tqt.h
+++ b/qtinterface/tqt.h
@@ -600,6 +600,7 @@ class QUObject;
 #include <Qt/q3strlist.h>
 #include <Qt/qx11info_x11.h>
 
+#include <Qt/q3combobox.h>
 #include <Qt/q3popupmenu.h>
 #include <Qt/q3progressbar.h>
 #include <Qt/q3textstream.h>