diff --git a/src/bin/tut2.rs b/src/bin/tut2.rs
index 702b870..a308ee0 100644
--- a/src/bin/tut2.rs
+++ b/src/bin/tut2.rs
@@ -1,3 +1,5 @@
+// Fearless Abstraction
+
 #![allow(dead_code)]
 #![allow(unused_imports)]
 
@@ -6,7 +8,7 @@
 /// Run this to see the disassembly of `compute_sum_of_squares_{1,2}`:
 ///
 /// ```bash
-/// cargo objdump --bin tut2 --release -- -d | awk -v RS= '/^tut2::compute_sum_of_squares/'
+/// cargo objdump --bin tut3 --release -- -d | awk -v RS= '/^([[:xdigit:]]+ )?tut2::compute_sum_of_squares/'
 /// ```
 
 #[inline(never)]