diff --git a/chapter4.txt b/chapter4.txt
index cfb48c1..9db5e3d 100644
--- a/chapter4.txt
+++ b/chapter4.txt
@@ -1 +1 @@
-It was the time of UFOs, it was the time of little green men.
+It was the time of SpaceShips, it was the time of sigma Men.