diff --git a/include/wx/mac/setup0.h b/include/wx/mac/setup0.h
index 94c4d765c0..5ed88ccc0a 100644
--- a/include/wx/mac/setup0.h
+++ b/include/wx/mac/setup0.h
@@ -334,6 +334,9 @@
 // Recommended setting: 1
 #define wxUSE_DYNLIB_CLASS  1
 
+// experimental extension, use with caution.
+#define wxUSE_DYNAMIC_LOADER  0
+
 // Set to 1 to use socket classes
 #define wxUSE_SOCKETS       1