diff --git a/src/tools/sysprof-profiler-ctl.c b/src/tools/sysprof-profiler-ctl.c
index 5adc5925..323147a6 100644
--- a/src/tools/sysprof-profiler-ctl.c
+++ b/src/tools/sysprof-profiler-ctl.c
@@ -151,8 +151,8 @@ main (gint   argc,
                                                          opt_object_path,
                                                          "org.gnome.Sysprof3.Profiler",
                                                          "Start",
-                                                         g_variant_new ("(h)", handle),
-                                                         NULL,
+                                                         g_variant_new ("(a{sv}h)", NULL, handle),
+                                                         G_VARIANT_TYPE ("()"),
                                                          G_DBUS_CALL_FLAGS_ALLOW_INTERACTIVE_AUTHORIZATION,
                                                          opt_timeout,
                                                          fd_list,