diff --git a/src/getting-started/01.00.BUILD.md b/src/getting-started/01.00.BUILD.md
index 44fda3c..2ce4313 100644
--- a/src/getting-started/01.00.BUILD.md
+++ b/src/getting-started/01.00.BUILD.md
@@ -136,7 +136,7 @@ executing the binary usually has the operating system start by executing the C r
 This in turn invokes the Rust runtime, as marked by the `start` language item,
 which in turn invokes the main function.
 
-Having enabled `no_std`, as we are targeting on a microcontroller,
+Having enabled `no_std`, as we are targeting a microcontroller,
 neither the crt0 nor the rust runtime are available,
 so even implementing `start` would not help us.
 We need to replace the operating system entry point.