diff --git a/SUMMARY.md b/SUMMARY.md
index 503d7d0..6fd95fa 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -3,7 +3,7 @@
 * [An Introduction to Modern CMake](README.md)
     * [Installing CMake](chapters/intro/installing.md)
     * [Running CMake](chapters/intro/running.md)
-    * [Dos and Don'ts](chapters/intro/dodonot.md)
+    * [Do's and Don'ts](chapters/intro/dodonot.md)
     * [What's new in CMake](chapters/intro/newcmake.md)
 * [Introduction to the Basics](chapters/basics.md)
     * [Variables and the Cache](chapters/basics/variables.md)
diff --git a/chapters/intro/newcmake.md b/chapters/intro/newcmake.md
index 95055c3..7e35f4e 100644
--- a/chapters/intro/newcmake.md
+++ b/chapters/intro/newcmake.md
@@ -268,7 +268,7 @@ string, and configure files directly from strings. Many other nice tiny
 features and papercut fixes are sprinkled throughout, a small selection is below.
 
 * Initially released [July 15, 2020](https://blog.kitware.com/cmake-3-18-0-available-for-download/)
-* `cmake` can `cat` files together now now
+* `cmake` can `cat` files together now
 * New profiling mode for `cmake`
 * `cmake_language` with `CALL` and `EVAL`
 * `export` requires `APPEND` if used multiple times (in CMake language level 3.18+)