diff --git a/gtk2_ardour/plugin_ui.cc b/gtk2_ardour/plugin_ui.cc
index f9208369f1..2483cb35fa 100644
--- a/gtk2_ardour/plugin_ui.cc
+++ b/gtk2_ardour/plugin_ui.cc
@@ -418,6 +418,7 @@ PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
 	, add_button (_("Add"))
 	, save_button (_("Save"))
 	, delete_button (_("Delete"))
+	, reset_button (_("Reset"))
 	, bypass_button (ArdourButton::led_default_elements)
 	, description_expander (_("Description"))
 	, plugin_analysis_expander (_("Plugin analysis"))
@@ -431,6 +432,7 @@ PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
 	ARDOUR_UI::instance()->set_tip (add_button, _("Save a new preset"));
 	ARDOUR_UI::instance()->set_tip (save_button, _("Save the current preset"));
 	ARDOUR_UI::instance()->set_tip (delete_button, _("Delete the current preset"));
+	ARDOUR_UI::instance()->set_tip (reset_button, _("Reset parameters to default (if no parameters are in automation play mode)"));
 	ARDOUR_UI::instance()->set_tip (bypass_button, _("Disable signal processing by the plugin"));
 	_no_load_preset = 0;
 
@@ -446,6 +448,10 @@ PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
 	delete_button.set_name ("generic button");
 	delete_button.signal_clicked.connect (sigc::mem_fun (*this, &PlugUIBase::delete_plugin_setting));
 
+	reset_button.set_name ("generic button");
+	reset_button.signal_clicked.connect (sigc::mem_fun (*this, &PlugUIBase::reset_plugin_parameters));
+
+
 	insert->ActiveChanged.connect (active_connection, invalidator (*this), boost::bind (&PlugUIBase::processor_active_changed, this,  boost::weak_ptr<Processor>(insert)), gui_context());
 
 	bypass_button.set_name ("plugin bypass button");
@@ -479,6 +485,10 @@ PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
 	plugin->PresetRemoved.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::preset_added_or_removed, this), gui_context ());
 	plugin->PresetLoaded.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::update_preset, this), gui_context ());
 	plugin->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::parameter_changed, this, _1, _2), gui_context ());
+
+	insert->AutomationStateChanged.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::automation_state_changed, this), gui_context());
+
+	automation_state_changed();
 }
 
 PlugUIBase::~PlugUIBase()
@@ -636,6 +646,18 @@ PlugUIBase::delete_plugin_setting ()
 #endif
 }
 
+void
+PlugUIBase::automation_state_changed ()
+{
+	reset_button.set_sensitive (insert->can_reset_all_parameters());
+}
+
+void
+PlugUIBase::reset_plugin_parameters ()
+{
+	insert->reset_parameters_to_default ();
+}
+
 bool
 PlugUIBase::bypass_button_release (GdkEventButton*)
 {
diff --git a/gtk2_ardour/plugin_ui.h b/gtk2_ardour/plugin_ui.h
index 6ae548d8fb..4aed3648c7 100644
--- a/gtk2_ardour/plugin_ui.h
+++ b/gtk2_ardour/plugin_ui.h
@@ -125,6 +125,8 @@ class PlugUIBase : public virtual sigc::trackable, public PBD::ScopedConnectionL
 	ArdourButton save_button;
 	/** a button to delete the current preset (if it is a user one) */
 	ArdourButton delete_button;
+	/** a button to delete the reset the plugin params */
+	ArdourButton reset_button;
 	/** a button to bypass the plugin */
 	ArdourButton bypass_button;
 	/** a button to acquire keyboard focus */
@@ -160,12 +162,14 @@ class PlugUIBase : public virtual sigc::trackable, public PBD::ScopedConnectionL
 	void add_plugin_setting ();
 	void save_plugin_setting ();
 	void delete_plugin_setting ();
+	void reset_plugin_parameters ();
 	bool focus_toggled(GdkEventButton*);
 	bool bypass_button_release(GdkEventButton*);
 	void toggle_description ();
 	void toggle_plugin_analysis ();
 	void processor_active_changed (boost::weak_ptr<ARDOUR::Processor> p);
 	void plugin_going_away ();
+	void automation_state_changed ();
 	virtual void parameter_changed (uint32_t, float);
 	void preset_added_or_removed ();
 	void update_preset_modified ();