diff --git a/include/wx/msw/setup0.h b/include/wx/msw/setup0.h
index fb4851ed25..9a7002fcd6 100644
--- a/include/wx/msw/setup0.h
+++ b/include/wx/msw/setup0.h
@@ -325,7 +325,7 @@
                                 // Use PCX bitmap/image code
 #define wxUSE_SERIAL        0
                                 // Use serialization (requires utils/serialize)
-#define wxUSE_DYNLIB_CLASS  0
+#define wxUSE_DYNLIB_CLASS  1
                                 // Compile in wxLibrary class for run-time
                                 // DLL loading and function calling
 #define wxUSE_TOOLTIPS      1