diff --git a/changelogs/fragments/64501-fix-python2.x-backward-compatibility.yaml b/changelogs/fragments/64501-fix-python2.x-backward-compatibility.yaml
new file mode 100644
index 00000000000..42c4761c231
--- /dev/null
+++ b/changelogs/fragments/64501-fix-python2.x-backward-compatibility.yaml
@@ -0,0 +1,2 @@
+bugfixes:
+- "acme_certificate - fix crash when module is used with Python 2.x."
diff --git a/lib/ansible/modules/crypto/acme/acme_certificate.py b/lib/ansible/modules/crypto/acme/acme_certificate.py
index 9527a872c9b..de94e9c5464 100644
--- a/lib/ansible/modules/crypto/acme/acme_certificate.py
+++ b/lib/ansible/modules/crypto/acme/acme_certificate.py
@@ -859,7 +859,7 @@ class ACMEClient(object):
             if relation == 'up':
                 chain_result, chain_info = self.account.get_request(link, parse_json_result=False)
                 if chain_info['status'] in [200, 201]:
-                    chain.clear()
+                    del chain[:]
                     chain.append(self._der_to_pem(chain_result))
 
         process_links(info, f)