diff --git a/pywb/webagg/responseloader.py b/pywb/webagg/responseloader.py
index 566c1f88..9e3e5ad2 100644
--- a/pywb/webagg/responseloader.py
+++ b/pywb/webagg/responseloader.py
@@ -438,7 +438,7 @@ class LiveWebLoader(BaseLoader):
         if not cdx.get('is_live'):
             now = datetime.datetime.utcnow()
             warc_headers['WARC-Recorded-From-URI'] = cdx.get('load_url')
-            warc_headers['WARC-Recorded-On-Date'] = datatime_to_iso_date(now)
+            warc_headers['WARC-Recorded-On-Date'] = datetime_to_iso_date(now)
 
         if remote_ip:
             warc_headers['WARC-IP-Address'] = remote_ip