diff --git a/src/plugins/splash/fade-throbber/plugin.c b/src/plugins/splash/fade-throbber/plugin.c
index 2ea3b5ca..40e221cf 100644
--- a/src/plugins/splash/fade-throbber/plugin.c
+++ b/src/plugins/splash/fade-throbber/plugin.c
@@ -104,6 +104,8 @@ struct _ply_boot_splash_plugin
   uint32_t is_animating : 1;
 };
 
+ply_boot_splash_plugin_interface_t *ply_boot_splash_plugin_get_interface (void);
+
 static void
 view_show_prompt (view_t     *view,
                   const char *prompt)