diff --git a/daemon/control.c b/daemon/control.c
index 93a30ea0..414d5f1d 100644
--- a/daemon/control.c
+++ b/daemon/control.c
@@ -684,6 +684,11 @@ void emit_studio_disappeared(void)
   dbus_signal_emit(g_dbus_connection, CONTROL_OBJECT_PATH, INTERFACE_NAME, "StudioDisappeared", "");
 }
 
+void emit_queue_execution_halted(void)
+{
+  dbus_signal_emit(g_dbus_connection, CONTROL_OBJECT_PATH, INTERFACE_NAME, "QueueExecutionHalted", "");
+}
+
 void emit_clean_exit(void)
 {
   dbus_signal_emit(g_dbus_connection, CONTROL_OBJECT_PATH, INTERFACE_NAME, "CleanExit", "");
@@ -748,12 +753,16 @@ SIGNAL_ARGS_END
 SIGNAL_ARGS_BEGIN(StudioDisappeared, "Studio D-Bus object disappeared")
 SIGNAL_ARGS_END
 
+SIGNAL_ARGS_BEGIN(QueueExecutionHalted, "Queue execution is halted because of error")
+SIGNAL_ARGS_END
+
 SIGNAL_ARGS_BEGIN(CleanExit, "Exit was requested")
 SIGNAL_ARGS_END
 
 SIGNALS_BEGIN
   SIGNAL_DESCRIBE(StudioAppeared)
   SIGNAL_DESCRIBE(StudioDisappeared)
+  SIGNAL_DESCRIBE(QueueExecutionHalted)
   SIGNAL_DESCRIBE(CleanExit)
 SIGNALS_END
 
diff --git a/daemon/control.h b/daemon/control.h
index 28925607..48dee9f7 100644
--- a/daemon/control.h
+++ b/daemon/control.h
@@ -34,6 +34,7 @@ extern const struct dbus_interface_descriptor g_lashd_interface_control;
 
 void emit_studio_appeared(void);
 void emit_studio_disappeared(void);
+void emit_queue_execution_halted(void);
 void emit_clean_exit(void);
 
 bool room_templates_init(void);
diff --git a/daemon/cqueue.c b/daemon/cqueue.c
index f1f0519b..ca5f706c 100644
--- a/daemon/cqueue.c
+++ b/daemon/cqueue.c
@@ -2,7 +2,7 @@
 /*
  * LADI Session Handler (ladish)
  *
- * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
+ * Copyright (C) 2009, 2010 Nedko Arnaudov <nedko@arnaudov.name>
  *
  **************************************************************************
  * This file contains interface to the command queue
@@ -25,6 +25,7 @@
  */
 
 #include "cmd.h"
+#include "control.h"
 
 void ladish_cqueue_init(struct ladish_cqueue * queue_ptr)
 {
@@ -57,6 +58,7 @@ loop:
   if (!cmd_ptr->run(cmd_ptr->context))
   {
     ladish_cqueue_clear(queue_ptr);
+    emit_queue_execution_halted();
     return;
   }
 
@@ -70,6 +72,7 @@ loop:
     log_error("unexpected cmd state %u after run()", cmd_ptr->state);
     ASSERT_NO_PASS;
     ladish_cqueue_clear(queue_ptr);
+    emit_queue_execution_halted();
     return;
   }