diff --git a/configure.in b/configure.in
index d8f3acc..cac829e 100644
--- a/configure.in
+++ b/configure.in
@@ -14,7 +14,7 @@ dnl                 changes are made
 dnl ---
 JACK_MAJOR_VERSION=0
 JACK_MINOR_VERSION=70
-JACK_MICRO_VERSION=4
+JACK_MICRO_VERSION=5
 
 dnl ---
 dnl HOWTO: updating the jack protocal version
diff --git a/jack/jack.h b/jack/jack.h
index 81b2720..cf5a0a3 100644
--- a/jack/jack.h
+++ b/jack/jack.h
@@ -63,6 +63,15 @@ int jack_internal_client_new (const char *client_name, const char *so_name, cons
  */
 void jack_internal_client_close (const char *client_name);
 
+/**
+ * @param client The Jack client structure.
+ *
+ * Check if the JACK subsystem is running with -R (--realtime).
+ *
+ * @return 1 if JACK is running realtime, 0 otherwise
+ */
+int jack_is_realtime (jack_client_t *client);
+
 /** 
  * @param client The Jack client structure.
  * @param function The jack_shutdown function pointer.
diff --git a/libjack/client.c b/libjack/client.c
index 6b8b852..21f2a66 100644
--- a/libjack/client.c
+++ b/libjack/client.c
@@ -1135,6 +1135,12 @@ jack_client_close (jack_client_t *client)
 	return 0;
 }	
 
+int jack_is_realtime (jack_client_t *client)
+
+{
+	return client->engine->real_time;
+}
+
 unsigned long jack_get_buffer_size (jack_client_t *client)
 
 {