diff --git a/trustgraph-flow/trustgraph/model/text_completion/azure_openai/llm.py b/trustgraph-flow/trustgraph/model/text_completion/azure_openai/llm.py
index f40beb11..d0939d1e 100755
--- a/trustgraph-flow/trustgraph/model/text_completion/azure_openai/llm.py
+++ b/trustgraph-flow/trustgraph/model/text_completion/azure_openai/llm.py
@@ -177,6 +177,7 @@ class Processor(ConsumerProducer):
 
         parser.add_argument(
             '-a', '--api-version',
+            default=default_api,
             help=f'API version (default: {default_api})'
         )