diff --git a/lib/ansible/modules/storage/purestorage/purefa_volume.py b/lib/ansible/modules/storage/purestorage/purefa_volume.py
index c9c9aa8e657..b16cce45007 100644
--- a/lib/ansible/modules/storage/purestorage/purefa_volume.py
+++ b/lib/ansible/modules/storage/purestorage/purefa_volume.py
@@ -157,7 +157,7 @@ def main():
         )
     )
 
-    required_if = [('state', 'present', ('size'))]
+    required_if = [('state', 'present', ['size'])]
 
     module = AnsibleModule(argument_spec,
                            required_if=required_if,