diff --git a/1989/fubar/.gitignore b/1989/fubar/.gitignore
index f82486988..e9d51691f 100644
--- a/1989/fubar/.gitignore
+++ b/1989/fubar/.gitignore
@@ -1,3 +1,5 @@
 fubar
 ouroboros
 ouroboros.c
+x
+x1