diff --git a/src/config.h.in b/src/config.h.in
index a6b89f3ad..ca36f2b3f 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -94,3 +94,6 @@
 
 /* Define to 1 if you want the built-in manual */
 #undef USE_MANUAL
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#undef HAVE_GETTIMEOFDAY