diff --git a/include/wx/fileconf.h b/include/wx/fileconf.h
index 573fbc430f..725af95b69 100644
--- a/include/wx/fileconf.h
+++ b/include/wx/fileconf.h
@@ -23,6 +23,7 @@
 
 #include "wx/textfile.h"
 #include "wx/string.h"
+#include "wx/confbase.h"
 
 // ----------------------------------------------------------------------------
 // wxFileConfig