diff --git a/ch05.asciidoc b/ch05.asciidoc
index 6a5bfefa..78c0b2ee 100644
--- a/ch05.asciidoc
+++ b/ch05.asciidoc
@@ -302,7 +302,7 @@ image::images/msbt_0502.png["TxScriptSimpleMathExample"]
 The following is a slightly more complex script, which calculates ++2 + 7 – 3 + 1++. Notice that when the script contains several operators in a row, the stack allows the results of one operator to be acted upon by the next operator:
 
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-2 3 OP_ADD 2 OP_MUL 1 OP_ADD 11 OP_EQUAL
+2 7 OP_ADD 3 OP_SUB 1 OP_ADD 7 OP_EQUAL
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 Try validating the preceding script yourself using pencil and paper. When the script execution ends, you should be left with the value TRUE on the stack.