diff --git a/matcher/mail.py b/matcher/mail.py
index cc5fd91..2bbf1e4 100644
--- a/matcher/mail.py
+++ b/matcher/mail.py
@@ -86,7 +86,7 @@ reply:
 
 """
 
-    send_mail("error creating changeset:" + body)
+    send_mail("error creating changeset", body)
 
 
 def send_traceback(info, prefix="osm-wikidata"):