diff --git a/README.md b/README.md
index 1200e2c8cc9ba18577bba4260097899195bb61a1..42134361d4f7fdcc7394be35017349b3d3c8351c 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ If your machine is not on the list, you can define `SYSTYPE=local` or modify it
 When you use GPU offloading with OpenMP, please **do not compile the CPU part with NVC**.
 This can be easily fixed by setting the environment variable:
 ```
-> export OMPI_CC = gcc
+> export OMPI_CC=gcc
 ```
 
 In the case in which the default compiler is NVC. The Makefile is suited to understand