diff --git a/extensions/drive-menu/extension.js b/extensions/drive-menu/extension.js
index 20c78b46..fc018840 100644
--- a/extensions/drive-menu/extension.js
+++ b/extensions/drive-menu/extension.js
@@ -68,8 +68,8 @@ DriveMenu.prototype = {
 	this.menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
 	this.menu.addAction(_("Open file manager"), function(event) {
 	    let appSystem = Shell.AppSystem.get_default();
-	    let app = appSystem.get_app('nautilus.desktop');
-	    app.activate(-1);
+	    let app = appSystem.lookup_app('nautilus.desktop');
+	    app.activate_full(-1, event.get_time());
 	});
     },
 
diff --git a/extensions/gajim/extension.js b/extensions/gajim/extension.js
index 9f97e9a6..7dfeea33 100644
--- a/extensions/gajim/extension.js
+++ b/extensions/gajim/extension.js
@@ -160,8 +160,8 @@ Source.prototype = {
             }
         }
 
-        let app = Shell.AppSystem.get_default().get_app('gajim.desktop');
-        app.activate_window(null, global.get_current_time());
+        let app = Shell.AppSystem.get_default().lookup_app('gajim.desktop');
+        app.activate(-1);
     },
 
     _onChatState: function(emitter, data) {
diff --git a/extensions/systemMonitor/extension.js b/extensions/systemMonitor/extension.js
index e9231da4..eb07f193 100644
--- a/extensions/systemMonitor/extension.js
+++ b/extensions/systemMonitor/extension.js
@@ -20,7 +20,7 @@ Indicator.prototype = {
                                           reactive: true});
         this.actor.connect('repaint', Lang.bind(this, this._draw));
         this.actor.connect('button-press-event', function() {
-            let app = Shell.AppSystem.get_default().get_app("gnome-system-monitor.desktop");
+            let app = Shell.AppSystem.get_default().lookup_app('gnome-system-monitor.desktop');
             app.open_new_window(-1);
         });