diff --git a/sist2-admin/sist2_admin/sist2.py b/sist2-admin/sist2_admin/sist2.py
index bd90fa3..dd81312 100644
--- a/sist2-admin/sist2_admin/sist2.py
+++ b/sist2-admin/sist2_admin/sist2.py
@@ -63,7 +63,7 @@ class WebOptions(BaseModel):
         if self.auth:
             args.append(f"--auth={self.auth}")
         if self.tag_auth:
-            args.append(f"--tag_auth={self.tag_auth}")
+            args.append(f"--tag-auth={self.tag_auth}")
         if self.dev:
             args.append(f"--dev")