diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt
index b8dea9cc8..555d5d83a 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/relays/Client.kt
@@ -26,6 +26,7 @@ object Client: RelayPool.Listener {
     private var relays = Constants.convertDefaultRelays()
     private var subscriptions = mapOf<String, List<TypedFilter>>()
 
+    @Synchronized
     fun connect(relays: Array<Relay>) {
         RelayPool.register(this)
         RelayPool.unloadRelays()