diff --git a/examples/usb_passthrough.rs b/examples/usb_passthrough.rs
index 6886f964..bd521317 100644
--- a/examples/usb_passthrough.rs
+++ b/examples/usb_passthrough.rs
@@ -1,8 +1,6 @@
 //! Dual CDC-ACM serial port example using polling in a busy loop.
 //!
 //! Characters written to one serial port appear on both.
-//!
-//! Note: This example must be built in release mode to work reliably
 #![no_std]
 #![no_main]
 
diff --git a/examples/usb_serial.rs b/examples/usb_serial.rs
index 8c1b9f3e..f4ef2c1a 100644
--- a/examples/usb_serial.rs
+++ b/examples/usb_serial.rs
@@ -1,6 +1,4 @@
 //! CDC-ACM serial port example using polling in a busy loop
-//!
-//! Note: This example must be built in release mode to work reliably
 #![no_std]
 #![no_main]