diff --git a/src/ssb.rpc.c b/src/ssb.rpc.c
index 5f5d8875..1140c5f8 100644
--- a/src/ssb.rpc.c
+++ b/src/ssb.rpc.c
@@ -1055,7 +1055,7 @@ static void _tf_ssb_rpc_ebt_send_clock_callback(const tf_ssb_ebt_clock_t* clock,
 	resend_clock_t* resend = user_data;
 	tf_ssb_connection_t* connection = resend->connection;
 
-	if (clock && clock->count)
+	if (clock && clock->count && tf_ssb_connection_is_connected(connection) && !tf_ssb_connection_is_closing(connection))
 	{
 		JSContext* context = tf_ssb_connection_get_context(connection);
 		JSValue message = JS_NewObject(context);