diff --git a/lab3/README.md b/lab3/README.md
index a5ad652d1e0e7ab4c35a2555c50739f80020da12..e9a9120b61c9fe6af01f3902fce32f619ed899ec 100644
--- a/lab3/README.md
+++ b/lab3/README.md
@@ -30,7 +30,7 @@ MPI I/O is used so that results can be written to the same file in parallel. Tak
 
 The simplest solution is likely to be for you to create a character buffer, and then use the MPI_File_write_at function.
 
-# Exercise 2 - MPI I/O and dervied types
+# Exercise 2 - MPI I/O and derived types
 
 Take the serial stl reader and modify it such that the stl file is read (and written) in parallel using collective MPI I/O. Use derived types such that the file can be read/written with a maximum of 3 I/O operations per read and write.