diff --git a/lib/ansible/modules/cloud/amazon/dynamodb_table.py b/lib/ansible/modules/cloud/amazon/dynamodb_table.py
index c1306399596..2d36af3446e 100644
--- a/lib/ansible/modules/cloud/amazon/dynamodb_table.py
+++ b/lib/ansible/modules/cloud/amazon/dynamodb_table.py
@@ -444,7 +444,7 @@ def main():
     argument_spec.update(dict(
         state=dict(default='present', choices=['present', 'absent']),
         name=dict(required=True, type='str'),
-        hash_key_name=dict(required=True, type='str'),
+        hash_key_name=dict(type='str'),
         hash_key_type=dict(default='STRING', type='str', choices=['STRING', 'NUMBER', 'BINARY']),
         range_key_name=dict(type='str'),
         range_key_type=dict(default='STRING', type='str', choices=['STRING', 'NUMBER', 'BINARY']),