diff -Naur mate-sensors-applet-1.2.0-old//sensors-applet/prefs-dialog.c mate-sensors-applet-1.2.0/sensors-applet/prefs-dialog.c
--- mate-sensors-applet-1.2.0-old//sensors-applet/prefs-dialog.c	2012-03-11 20:56:07.000000000 +0200
+++ mate-sensors-applet-1.2.0/sensors-applet/prefs-dialog.c	2012-04-03 16:57:05.007413652 +0300
@@ -65,7 +65,7 @@
         case GTK_RESPONSE_HELP:
                 g_debug("loading help in prefs");
                 current_page = gtk_notebook_get_current_page(sensors_applet->prefs_dialog->notebook);
-		uri = g_strdup_printf("ghelp:sensors-applet?%s",
+		uri = g_strdup_printf("http://mate-desktop.org/",
 				      ((current_page == 0) ?
 				       "sensors-applet-general-options" :
 				       ((current_page == 1) ?
diff -Naur mate-sensors-applet-1.2.0-old//sensors-applet/sensor-config-dialog.c mate-sensors-applet-1.2.0/sensors-applet/sensor-config-dialog.c
--- mate-sensors-applet-1.2.0-old//sensors-applet/sensor-config-dialog.c	2012-03-11 20:56:07.000000000 +0200
+++ mate-sensors-applet-1.2.0/sensors-applet/sensor-config-dialog.c	2012-04-03 16:57:34.863736578 +0300
@@ -80,7 +80,7 @@
         case GTK_RESPONSE_HELP:
                 g_debug("loading help in config dialog");
                 gtk_show_uri(NULL,
-			     "ghelp:sensors-applet?sensors-applet-sensors",
+			     "http://mate-desktop.org/",
 			     gtk_get_current_event_time(),
 			     &error);
                 
diff -Naur mate-sensors-applet-1.2.0-old//sensors-applet/sensors-applet.c mate-sensors-applet-1.2.0/sensors-applet/sensors-applet.c
--- mate-sensors-applet-1.2.0-old//sensors-applet/sensors-applet.c	2012-03-11 20:56:07.000000000 +0200
+++ mate-sensors-applet-1.2.0/sensors-applet/sensors-applet.c	2012-04-03 16:57:21.816032483 +0300
@@ -80,7 +80,7 @@
 
         GError *error = NULL;
         
-        gtk_show_uri(NULL, "ghelp:sensors-applet",
+        gtk_show_uri(NULL, "http://mate-desktop.org/",
 		     gtk_get_current_event_time(),
 		     &error);