diff --git a/docs/source/advanced/performance_tuning/index.rst b/docs/source/advanced/performance_tuning/index.rst
index 50cd0b2c8..606a1ba08 100644
--- a/docs/source/advanced/performance_tuning/index.rst
+++ b/docs/source/advanced/performance_tuning/index.rst
@@ -3,7 +3,7 @@ Performance Tuning
 
 xCAT supports clusters of all sizes. This document is a collection of hints, tips, and special considerations when working with large clusters, especially a single server (management node or service node) manages more than 128 nodes.
 
-The information in this document should be viewed as example data only. Many of the suggestions are based on anecdotal experiences and may not apply to your particular environment. Suggestions in different sections of this document may recommend different or conflicting settings since they may have been provided by different people for different cluster environments. Often there is a significant amount of flexiblity in most of these settings -- you will need to resolve these differences in a way that works best for your cluster.
+The information in this document should be viewed as example data only. Many of the suggestions are based on anecdotal experiences and may not apply to your particular environment. Suggestions in different sections of this document may recommend different or conflicting settings since they may have been provided by different people for different cluster environments. Often there is a significant amount of flexibility in most of these settings -- you will need to resolve these differences in a way that works best for your cluster.
 
 .. toctree::
    :maxdepth: 2
diff --git a/docs/source/advanced/performance_tuning/linux_os_tuning.rst b/docs/source/advanced/performance_tuning/linux_os_tuning.rst
index c45a9a65c..c84735ec5 100644
--- a/docs/source/advanced/performance_tuning/linux_os_tuning.rst
+++ b/docs/source/advanced/performance_tuning/linux_os_tuning.rst
@@ -32,7 +32,7 @@ Adjusting Operating System tunables can improve large scale cluster performance,
         net.core.netdev_max_backlog=1500
 
 
-    And if you encounter **Neighbour table overflow** error, it meams there are two many ARP requests and the server cannot reply. Tune the ARP cache with below parameters.
+    And if you encounter **Neighbour table overflow** error, it means there are two many ARP requests and the server cannot reply. Tune the ARP cache with below parameters.
 
     ::