diff --git a/defaults/main.yml b/defaults/main.yml
index bba711a..d5676f9 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -9,7 +9,6 @@ certbot_auto_renew_options: "--quiet --no-self-upgrade"
 certbot_testmode: false
 certbot_hsts: false
 
-
 # Parameters used when creating new Certbot certs.
 certbot_create_if_missing: false
 certbot_create_method: standalone
@@ -58,3 +57,4 @@ certbot_keep_updated: true
 
 # Where to put Certbot when installing from source.
 certbot_dir: /opt/certbot
+certbot_source_executable_name: "certbot-auto"
diff --git a/tasks/install-from-source.yml b/tasks/install-from-source.yml
index daee685..786ba98 100644
--- a/tasks/install-from-source.yml
+++ b/tasks/install-from-source.yml
@@ -9,9 +9,9 @@
 
 - name: Set Certbot script variable.
   set_fact:
-    certbot_script: "{{ certbot_dir }}/certbot-auto"
+    certbot_script: "{{ certbot_dir }}/{{ certbot_source_executable_name }}"
 
-- name: Ensure certbot-auto is executable.
+- name: Ensure certbot is executable.
   file:
     path: "{{ certbot_script }}"
     mode: 0755