diff --git a/cmirror.c b/cmirror.c
index f996e47..bf40d5a 100644
--- a/cmirror.c
+++ b/cmirror.c
@@ -695,7 +695,6 @@ static void slave(char *slave_path) {
                 die("%s: %m\n", unix_socket_name);
             listen(s_listen, 1);
             fprintf(out, "LISTEN %s\n", unix_socket_name);
-            fflush(out);
         } else {
             struct sockaddr_in sockaddr;
             socklen_t sockaddr_len = sizeof(sockaddr);
@@ -705,8 +704,8 @@ static void slave(char *slave_path) {
             if (res == -1)
                 die("listen: %m\n");
             fprintf(out, "LISTEN %d\n", ntohs(sockaddr.sin_port));
-            fflush(out);
         }
+        fflush(out);
         s_data = accept(s_listen, NULL, NULL);
         if (s_data == -1)
             die("accept: %m\n");