diff --git a/configure.ac b/configure.ac
index 991cbec..286b7d9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -153,6 +153,7 @@ AS_IF([test "x$with_jack" = "xyes"], [
   AC_MSG_RESULT([using JACK])
   AC_CHECK_LIB(jack, jack_client_open, , AC_MSG_ERROR([JACK support requires the jack library!]))
   api="$api -D__UNIX_JACK__"
+  req="$req jack"
 ])