diff --git a/src/main.rs b/src/main.rs
index 89ef302d1..b50187e27 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -150,7 +150,8 @@ fn create_app<'a, 'b>(
                 .help(
                     "boot=<boot_vcpus>,max=<max_vcpus>,\
                     topology=<threads_per_core>:<cores_per_die>:<dies_per_package>:<packages>,\
-                    kvm_hyperv=on|off,max_phys_bits=<maximum_number_of_physical_bits>",
+                    kvm_hyperv=on|off,max_phys_bits=<maximum_number_of_physical_bits>,\
+                    affinity=<list_of_vcpus_with_their_associated_cpuset>",
                 )
                 .default_value(default_vcpus)
                 .group("vm-config"),