diff --git a/src/05-led-roulette/the-challenge.md b/src/05-led-roulette/the-challenge.md
index e7ef424fb..77f0d3ba5 100644
--- a/src/05-led-roulette/the-challenge.md
+++ b/src/05-led-roulette/the-challenge.md
@@ -63,7 +63,7 @@ break DefaultHandler
 # Set a breakpiont at HardFault
 break HardFault
 
-# Continue running and unill we hit the main breakpoint
+# Continue running and until we hit the main breakpoint
 continue
 
 # Step from the trampoline code in entry into main
@@ -149,4 +149,4 @@ the [embedded discovery book](https://github.com/rust-embedded/discovery) so you
 can save your changes in your own branch of your fork. We suggest creating
 your own branch and leaving the `master` branch alone so the `master` branch
 of your fork can stay in sync with the upstream repo. Also, it allows you to
-more easily create PR's and improve this book, **thank you in advance**!
\ No newline at end of file
+more easily create PR's and improve this book, **thank you in advance**!
diff --git a/src/06-hello-world/README.md b/src/06-hello-world/README.md
index a3738d80f..2daae1bc6 100644
--- a/src/06-hello-world/README.md
+++ b/src/06-hello-world/README.md
@@ -110,7 +110,7 @@ hello_world::__cortex_m_rt_main () at ~/embedded-discovery/src/06-hello-world/sr
 ```
 
 Now issue a `next` command which will exectue `aux6::init()` and
-stop at he next executable statement in `main.rs`, which
+stop at the next executable statement in `main.rs`, which
 positions us at line 12:
 
 ``` text