diff --git a/changelogs/fragments/4733-redis-fail.yml b/changelogs/fragments/4733-redis-fail.yml
new file mode 100644
index 0000000000..f8a6e14d9a
--- /dev/null
+++ b/changelogs/fragments/4733-redis-fail.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - "redis* modules - fix call to ``module.fail_json`` when failing because of missing Python libraries (https://github.com/ansible-collections/community.general/pull/4733)."
diff --git a/plugins/module_utils/redis.py b/plugins/module_utils/redis.py
index de5c8c7fc3..8f035614f0 100644
--- a/plugins/module_utils/redis.py
+++ b/plugins/module_utils/redis.py
@@ -37,7 +37,7 @@ def fail_imports(module, needs_certifi=True):
         errors.append(missing_required_lib('certifi'))
         traceback.append(CERTIFI_IMPORT_ERROR)
     if errors:
-        module.fail_json(errors=errors, traceback='\n'.join(traceback))
+        module.fail_json(msg='\n'.join(errors), traceback='\n'.join(traceback))
 
 
 def redis_auth_argument_spec(tls_default=True):