diff --git a/include/portable.h.in b/include/portable.h.in
index 2f54c04879..7a442cf703 100644
--- a/include/portable.h.in
+++ b/include/portable.h.in
@@ -426,8 +426,8 @@
 /* Define if you have the <readline/history.h> header file.  */
 #undef HAVE_READLINE_HISTORY_H
 
-/* Define if you have the <readlline/readline.h> header file.  */
-#undef HAVE_READLLINE_READLINE_H
+/* Define if you have the <readline/readline.h> header file.  */
+#undef HAVE_READLINE_READLINE_H
 
 /* Define if you have the <regex.h> header file.  */
 #undef HAVE_REGEX_H