diff --git a/docs/17-tutorial-breakout.md b/docs/17-tutorial-breakout.md
index 547c4de..5ea37e6 100644
--- a/docs/17-tutorial-breakout.md
+++ b/docs/17-tutorial-breakout.md
@@ -685,9 +685,9 @@ seconds asks for fifty frames a second.
 ### Why `GOTO` rather than `DO ... LOOP`
 
 A `DO ... LOOP` around the frame would read better, and it is not usable here: **a `GOTO`
-that jumps out of a `FOR` or a `DO` does not release the loop's scope.** There are 32
+that jumps out of a `FOR` or a `DO` does not release the loop's scope.** There are 12
 scopes, so a game that leaves its main loop once per lost life stops on the
-thirty-second one:
+twelfth one:
 
 ```basic
 N# = 0
@@ -700,7 +700,7 @@ PRINT "SURVIVED " + N#
 ```
 
 ```output
-? 3 : PARSE ERROR Environment pool exhausted at line 3 (32 in use)
+? 3 : PARSE ERROR Environment pool exhausted at line 3 (12 in use)
 
 ```