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doc.zih.tu-dresden.de/docs/jobs_and_resources/mpi_issues.md

@@ -14,7 +14,7 @@ using `OMPIO` as MPI-IO module with OpenMPI/4.1.x modules on ZIH systems. At the
 cause is unclear and needs further investigation.
 
 **A workaround** for this performance loss is to use "old", i.e., `ROMIO` MPI-IO-module. This
-is achieved by setting the environment variable `OMPI_MCA_IO` before executing the application as
+is achieved by setting the environment variable `OMPI_MCA_io` before executing the application as
 follows
 
 ```console