--- a/focus-blur/src/src/gimpplugin.c
+++ b/focus-blur/src/src/gimpplugin.c
@@ -116,9 +116,11 @@ run (const gchar         *name,
   drawable_ID = param[2].data.d_drawable;
 
 #ifdef ENABLE_MP
+#if !GLIB_CHECK_VERSION (2, 31, 0)
   if (! g_thread_supported ())
     g_thread_init (NULL);
 #endif
+#endif
 
   INIT_I18N ();
 
