diff --git a/jmorecfg.h b/jmorecfg.h
index 7641692..39e3495 100644
--- a/jmorecfg.h
+++ b/jmorecfg.h
@@ -242,10 +242,6 @@ typedef unsigned int JDIMENSION;
 #endif
 
 
-#if (defined(__MWERKS__) && defined(__WXMSW__))
-#define HAVE_BOOLEAN
-#endif
-
 /*
  * On a few systems, type boolean and/or its values FALSE, TRUE may appear
  * in standard header files.  Or you may have conflicts with application-