diff --git a/main.c b/main.c
index 3d4b682..79843b7 100644
--- a/main.c
+++ b/main.c
@@ -133,7 +133,7 @@ int main(int argc, char **argv)
 	bool list = false, have_dest_mac = false;
 	struct nmrpd_args args = {
 		.rx_timeout = 1000,
-		.ul_timeout = 15 * 60,
+		.ul_timeout = 15 * 60 * 1000,
 		.tftpcmd = NULL,
 		.file_local = NULL,
 		.file_remote = NULL,