diff --git a/examples/bare6.rs b/examples/bare6.rs
index bda939160cc3cbcb37c4063fca60611ed98f5f05..c6062240888d78c90d2bd2823deea00f0202ae83 100644
--- a/examples/bare6.rs
+++ b/examples/bare6.rs
@@ -128,7 +128,7 @@ fn clock_out(rcc: &RCC, gpioc: &GPIOC) {
 //
 //    What is the frequency of blinking?
 //
-//    ** your answer here **
+//    ** Period of 3.932 seconds from "on" to next "on", 0.2543 Hz. **
 //
 //    commit your answers (bare6_1)
 //