diff --git a/config.h.in b/config.h.in
index d2edf62..0a33fbe 100644
--- a/config.h.in
+++ b/config.h.in
@@ -205,6 +205,9 @@
 /* Define if you have the siginterrupt function.  */
 #undef HAVE_SIGINTERRUPT
 
+/* Define if you have the strftime function.  */
+#undef HAVE_STRFTIME
+
 /* Define if you have the symlink function.  */
 #undef HAVE_SYMLINK