diff --git a/config.h.in b/config.h.in
index 8e63754b..5ecb9957 100644
--- a/config.h.in
+++ b/config.h.in
@@ -12,6 +12,9 @@
 /* Define to 1 if you have the `dcgettext' function. */
 #undef HAVE_DCGETTEXT
 
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
 /* Define if the GNU gettext() function is already present or preinstalled. */
 #undef HAVE_GETTEXT