diff --git a/setup.h.in b/setup.h.in
index b4d0aadddd..ab4f865fc2 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -1099,6 +1099,13 @@
  */
 #define wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW 1
 
+/* Define if the system headers declare the type boolean (which will conflict
+ * with the jpeg headers unless HAVE_BOOLEAN is defined).  */
+#undef HAVE_BOOLEAN
+
+/* Define is the header pbt.h is missing.  */
+#undef NEED_PBT_H
+
 #endif /* __WIN32__ */
 
 /* --------------------------------------------------------*