diff --git a/config.h.in b/config.h.in
index bf54bc0..07ded07 100644
--- a/config.h.in
+++ b/config.h.in
@@ -91,6 +91,9 @@
 /* Define if you have the <dirent.h> header file.  */
 #undef HAVE_DIRENT_H
 
+/* Define if you have the <dlfcn.h> header file.  */
+#undef HAVE_DLFCN_H
+
 /* Define if you have the <errno.h> header file.  */
 #undef HAVE_ERRNO_H