diff --git a/tasks/systemd.yml b/tasks/systemd.yml
index 6b94c95..5c4fe3d 100644
--- a/tasks/systemd.yml
+++ b/tasks/systemd.yml
@@ -1,5 +1,11 @@
 ---
 
+- name: Resolve absolute path for certbot script
+  command: "which {{ certbot_script }}"
+  register: certbot_script_absolute
+  when: not certbot_install_from_source
+  changed_when: false
+
 - name: Create certbot-renew service
   template:
     src: certbot-renew.service.j2
diff --git a/templates/certbot-renew.service.j2 b/templates/certbot-renew.service.j2
index 1270240..9832341 100644
--- a/templates/certbot-renew.service.j2
+++ b/templates/certbot-renew.service.j2
@@ -4,6 +4,10 @@ Description=Let's Encrypt renewal service
 [Service]
 User={{ certbot_auto_renew_user }}
 Type=oneshot
-ExecStart={{ certbot_script }} renew --quiet --agree-tos
+{% if certbot_script_absolute is defined %}
+  ExecStart={{ certbot_script_absolute.stdout }} renew --quiet --agree-tos
+{% else %}
+  ExecStart={{ certbot_script }} renew --quiet --agree-tos
+{% endif %}
 
 ExecStartPost=/bin/systemctl reload {{ certbot_web_service }}.service