diff --git a/MagickCore/magick-config.h b/MagickCore/magick-config.h
index 978a4cd..feb5a4e 100644
--- a/MagickCore/magick-config.h
+++ b/MagickCore/magick-config.h
@@ -1203,9 +1203,7 @@
 /* #undef LQR_DELEGATE */
 
 /* Define if using libltdl to support dynamically loadable modules */
-#ifndef MAGICKCORE_LTDL_DELEGATE
-#define MAGICKCORE_LTDL_DELEGATE 1
-#endif
+/* #undef LTDL_DELEGATE */
 
 /* Define if the OS needs help to load dependent libraries for dlopen(). */
 /* #undef LTDL_DLOPEN_DEPLIBS */