--- a/src/procman_gksu.cpp
+++ b/src/procman_gksu.cpp
@@ -28,18 +28,20 @@ static void load_gksu(void)
 gboolean procman_gksu_create_root_password_dialog(const char *command)
 {
     GError *e = NULL;
+    gchar *cmd;
 
-    /* Returns FALSE or TRUE on success, depends on version ... */
-    gksu_run(command, &e);
+    cmd = g_strdup_printf("xdg-su -c '%s'", command);
+    g_spawn_command_line_sync(cmd, NULL, NULL, NULL, &e);
+    g_free(cmd);
 
     if (e) {
-        g_critical("Could not run gksu_run(\"%s\") : %s\n",
+        g_critical("Could not run xdg-su -c '%s') : %s\n",
                    command, e->message);
         g_error_free(e);
         return FALSE;
     }
 
-    g_message("gksu_run did fine\n");
+    g_message("xdg-su did fine\n");
     return TRUE;
 }
 
@@ -48,7 +50,6 @@ gboolean procman_gksu_create_root_passwo
 gboolean
 procman_has_gksu(void)
 {
-    load_gksu();
-    return gksu_run != NULL;
+    return g_file_test("/usr/bin/gksu", G_FILE_TEST_EXISTS);
 }
 
--- a/src/procman_matesu.cpp
+++ b/src/procman_matesu.cpp
@@ -19,8 +19,8 @@ load_matesu(void)
 
     init = TRUE;
 
-    load_symbols("libmatesu.so.0",
-             "matesu_exec", &matesu_exec,
+    load_symbols("libgnomesu.so.0",
+             "gnomesu_exec", &matesu_exec,
              NULL);
 }