diff --git a/documentation/kernel-dev/kernel-dev-concepts-appx.xml b/documentation/kernel-dev/kernel-dev-concepts-appx.xml
index 732c0c310a..ac91749cd6 100644
--- a/documentation/kernel-dev/kernel-dev-concepts-appx.xml
+++ b/documentation/kernel-dev/kernel-dev-concepts-appx.xml
@@ -132,7 +132,7 @@
                 The "Yocto Project Baseline Kernel" contains functionality that is common to every kernel
                 type and BSP that is organized further up the tree.
                 Placing these common features in the
-                tree this way means features don't have to be duplicated along individual branches of the
+                tree this way means features do not have to be duplicated along individual branches of the
                 structure.
             </para>
             <para>