diff --git a/include/portable.h.in b/include/portable.h.in
index ddb1957080..407799ff3d 100644
--- a/include/portable.h.in
+++ b/include/portable.h.in
@@ -602,9 +602,6 @@
 /* Define if you have the bind library (-lbind).  */
 #undef HAVE_LIBBIND
 
-/* Define if you have the dl library (-ldl).  */
-#undef HAVE_LIBDL
-
 /* Define if you have the gen library (-lgen).  */
 #undef HAVE_LIBGEN