diff --git a/parsedmarc/elastic.py b/parsedmarc/elastic.py
index d3f4f17e..98351171 100644
--- a/parsedmarc/elastic.py
+++ b/parsedmarc/elastic.py
@@ -664,7 +664,8 @@ def save_forensic_report_to_elasticsearch(
             raise ElasticsearchError("Elasticsearch error: {0}".format(e.__str__()))
     except KeyError as e:
         raise InvalidForensicReport(
-            "Forensic report missing required field: {0}".format(e.__str__()))
+            "Forensic report missing required field: {0}".format(e.__str__())
+        )
 
 
 def save_smtp_tls_report_to_elasticsearch(