diff --git a/lessons/9.md b/lessons/9.md
index 82554c7..b819cdf 100644
--- a/lessons/9.md
+++ b/lessons/9.md
@@ -9,6 +9,6 @@ In this lesson you'll learn the concepts underpinning multi-node computation and
 
 ## Readings and Assignments
 
-[Reading: Distributed Programming and MPI](../readings/openmp.md)
+[Reading: Distributed Programming and MPI](../readings/mpi.md)
 
 [Project: MPI](../project/phase7.md) (**start working on this well before the due date**)
diff --git a/readings/mpi.md b/readings/mpi.md
index 9e0c59c..f1c3e5f 100644
--- a/readings/mpi.md
+++ b/readings/mpi.md
@@ -13,7 +13,7 @@ Read [subsections 2.6.3.1-6](EijkhoutHPCTutorialsVol1.pdf#subsection.2.6.3) of E
 
 ## MPI
 
-The [Message Passing Interface (MPI)](https://en.wikipedia.org/wiki/Message_Passing_Interface) is an interface for passing data between processes using messages. These processes can be on the same machine or across nodes. All MPI programs being with a call to MPI_Init and end with MPI_Finalize. The MPI functions are defined in mpi.h.
+The [Message Passing Interface (MPI)](https://en.wikipedia.org/wiki/Message_Passing_Interface) is an interface for passing data between processes using messages. These processes can be on the same machine or across nodes. All MPI programs being with a call to `MPI_Init` and end with `MPI_Finalize`. The MPI functions are defined in `mpi.h`.
 
 ```c++
 #include <iostream>