diff --git a/Documentation/learning/lock/README.md b/Documentation/learning/lock/README.md
index 163f6d4c8..daddd0352 100644
--- a/Documentation/learning/lock/README.md
+++ b/Documentation/learning/lock/README.md
@@ -53,7 +53,7 @@ failed to write to storage: error: given version (4703569812595502721) differ fr
 ```
 
 ### Notes on the parameters related to stop the world GC pause
-`client` program includes two constant values: `nrGarbageObjects` and `sessionTTL`. These parameters are configured for causing lease expiration with stop the world GC pause of go runtime. They heavily rely on resources of a machine for executing the example. If lease expiration doesn't happen on your machine, update these parameters and try again.
+`client` program includes two constant values: `nrGarbageObjects` and `sessionTTL`. These parameters are configured for causing lease expiration with stop the world GC pause of go runtime. They heavily rely on resources of a machine for executing the example. If lease expiration doesn't happen on thy machine, update these parameters and try again.
 
 [why.md]: ../why.md#Notes-on-the-usage-of-lock-and-lease
 [fencing]: https://martin.kleppmann.com/2016/02/08/how-to-do-distributed-locking.html
diff --git a/pkg/adt/README.md b/pkg/adt/README.md
index 9f010a1cb..36a2ccb78 100644
--- a/pkg/adt/README.md
+++ b/pkg/adt/README.md
@@ -45,5 +45,5 @@ Deleting the node `11` triggers multiple rotates for rebalancing:
 ![red-black-tree-08-delete-11.png](img/red-black-tree-08-delete-11.png)
 ![red-black-tree-09-delete-11.png](img/red-black-tree-09-delete-11.png)
 
-Try yourself at https://www.cs.usfca.edu/~galles/visualization/RedBlack.html.
+Try thyself at https://www.cs.usfca.edu/~galles/visualization/RedBlack.html.
 Hello World 2