diff --git a/res/res_phoneprov.c b/res/res_phoneprov.c
index a8a8ec53c2367417983895fb41b472121664748a..f348033538082e5351bb890c8a2bc7a2a19f6838 100644
--- a/res/res_phoneprov.c
+++ b/res/res_phoneprov.c
@@ -137,7 +137,7 @@ struct http_route {
 
 static struct ao2_container *profiles;
 static struct ao2_container *http_routes;
-AST_RWLIST_HEAD_STATIC(users, user);
+static AST_RWLIST_HEAD_STATIC(users, user);
 
 /*! \brief Extensions whose mime types we think we know */
 static struct {