diff --git a/roles/run-tempest/README.rst b/roles/run-tempest/README.rst
index 91b0b5f..3643edb 100644
--- a/roles/run-tempest/README.rst
+++ b/roles/run-tempest/README.rst
@@ -1,5 +1,8 @@
 Run Tempest
 
+The result of the tempest run is stored in the `tempest_run_result`
+variable (through the `register` statement).
+
 **Role Variables**
 
 .. zuul:rolevar:: devstack_base_dir
diff --git a/roles/run-tempest/tasks/main.yaml b/roles/run-tempest/tasks/main.yaml
index 8686f9a..3e5772b 100644
--- a/roles/run-tempest/tasks/main.yaml
+++ b/roles/run-tempest/tasks/main.yaml
@@ -55,6 +55,7 @@
             --black-regex={{tempest_black_regex|quote}}
   args:
     chdir: "{{devstack_base_dir}}/tempest"
+  register: tempest_run_result
   become: true
   become_user: tempest
   environment: "{{ tempest_tox_environment }}"