diff --git a/docs/handbook/guidelines/best_practice_c_cpp.md b/docs/handbook/guidelines/best_practice_c_cpp.md
index 135c9d49..58b45061 100644
--- a/docs/handbook/guidelines/best_practice_c_cpp.md
+++ b/docs/handbook/guidelines/best_practice_c_cpp.md
@@ -55,7 +55,7 @@ Notes relating to fixed size char buffer use:
 - When performing low level operations on byte arrays, it's preferable
   to calculate sizes and use `memcpy` to construct the buffer.
 - Complex logic to construct fixed size char buffers should assert the
-  final size fits withing buffer size.
+  final size fits within buffer size.
 
 ### Exceptions