diff --git a/changelogs/fragments/51795-acme_challenge_cert_helper-module-fail.yaml b/changelogs/fragments/51795-acme_challenge_cert_helper-module-fail.yaml
new file mode 100644
index 00000000000..e09ff0f3e78
--- /dev/null
+++ b/changelogs/fragments/51795-acme_challenge_cert_helper-module-fail.yaml
@@ -0,0 +1,2 @@
+bugfixes:
+- "acme_challenge_cert_helper - the module no longer crashes when the required ``cryptography`` library cannot be found."
diff --git a/lib/ansible/modules/crypto/acme/acme_challenge_cert_helper.py b/lib/ansible/modules/crypto/acme/acme_challenge_cert_helper.py
index 0f41b3514e7..cea3d87acc8 100644
--- a/lib/ansible/modules/crypto/acme/acme_challenge_cert_helper.py
+++ b/lib/ansible/modules/crypto/acme/acme_challenge_cert_helper.py
@@ -172,7 +172,7 @@ def main():
         ),
     )
     if not HAS_CRYPTOGRAPHY:
-        module.fail(msg='cryptography >= 1.3 is required for this module.')
+        module.fail_json(msg='cryptography >= 1.3 is required for this module.')
 
     try:
         # Get parameters