diff --git a/src/mirror.c b/src/mirror.c
index 3a7d1fa..8e3b312 100644
--- a/src/mirror.c
+++ b/src/mirror.c
@@ -706,6 +706,7 @@ void mirror_begin_cb( struct ev_loop *loop, ev_timer *w, int revents )
 
 	if ( ctrl->serve->allocation_map_built || ctrl->serve->allocation_map_not_built ) {
 		info( "allocation map builder is finished, beginning migration" );
+		ev_timer_stop( loop, w );
 		/* Start by writing xfer 0 to the listener */
 		ev_io_start( loop, &ctrl->write_watcher );
 		/* We want to timeout during the first write as well as subsequent ones */