diff --git a/configure1.in b/configure1.in
index e8c71c20881..4d527fa5050 100755
--- a/configure1.in
+++ b/configure1.in
@@ -1576,7 +1576,7 @@ AC_ALLOCA
 AC_HAVE_LIBRARY(-lm)
 AC_HAVE_FUNCS(gettimeofday gethostname dup2 rename closedir mkdir rmdir \
 random lrand48 bcopy bcmp logb frexp fmod drem ftime res_init setsid \
-strerror fpathconf select)
+strerror fpathconf select mktime)
 
 ok_so_far=true
 AC_FUNC_CHECK(socket, , ok_so_far=)