diff --git a/README.md b/README.md
index 04f910f05e54f3baf7d2e09cfdaf242e85d70a86..0ae090c8618d890627295d6a6f7f5294fd9ec1a8 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,9 @@ First it is necessary to book a node for interactive use:
 salloc -A <allocation-name> -N 1 -t 1:0:0
 ```
 
+You might also need to specify a reservation by adding the flag 
+`--reservation=<name-of-reservation>`.
+
 Then the srun command is used to launch an MPI application:
 
 ```