diff --git a/ch_1_intro.md b/ch_1_intro.md
index fccab41..c36db9e 100644
--- a/ch_1_intro.md
+++ b/ch_1_intro.md
@@ -574,7 +574,7 @@ spingon! (30, 2, inv (36), 1.02, 95)
 {{Figure 7: Snail-ish spingon. Top of p. 21.}}
 
 ```
-repeat! 3 {
+repeat 3 {
   spingon! (4, 120, 0, 0.95, 50)
   right! (0.25)
 }