diff --git a/crawlers/mooncrawl/mooncrawl/generic_crawler/cli.py b/crawlers/mooncrawl/mooncrawl/generic_crawler/cli.py
index 92a156c1..e8129d3e 100644
--- a/crawlers/mooncrawl/mooncrawl/generic_crawler/cli.py
+++ b/crawlers/mooncrawl/mooncrawl/generic_crawler/cli.py
@@ -174,8 +174,8 @@ def main():
         type=str,
         required=True,
         choices=[
-            "ethereum",
-            "polygon",
+            AvailableBlockchainType.ETHEREUM.value,
+            AvailableBlockchainType.POLYGON.value,
         ],
     )
     crawl_parser.add_argument(