diff --git a/include/wx/generic/private/widthcalc.h b/include/wx/generic/private/widthcalc.h
index ed5dc50a69..41213371ed 100644
--- a/include/wx/generic/private/widthcalc.h
+++ b/include/wx/generic/private/widthcalc.h
@@ -13,6 +13,7 @@
 
 #if wxUSE_DATAVIEWCTRL || wxUSE_LISTCTRL
 
+#include "wx/log.h"
 #include "wx/timer.h"
 
 // ----------------------------------------------------------------------------