diff --git a/src/logic/wallets/store/middlewares/providerWatcher.js b/src/logic/wallets/store/middlewares/providerWatcher.js
index e69de29b..46e7f7c0 100644
--- a/src/logic/wallets/store/middlewares/providerWatcher.js
+++ b/src/logic/wallets/store/middlewares/providerWatcher.js
@@ -0,0 +1 @@
+// @flow