diff --git a/package/gluon-radv-filterd/src/gluon-radv-filterd.c b/package/gluon-radv-filterd/src/gluon-radv-filterd.c
index 36e64433..82ee060b 100644
--- a/package/gluon-radv-filterd/src/gluon-radv-filterd.c
+++ b/package/gluon-radv-filterd/src/gluon-radv-filterd.c
@@ -105,7 +105,7 @@ struct router {
 	uint16_t tq;
 };
 
-struct global {
+static struct global {
 	int sock;
 	struct router *routers;
 	const char *mesh_iface;