diff --git a/tests/data/test1406 b/tests/data/test1406
index 664f75029f57248d159b5ea0888b698d332be3de..b7727edfd6b56e5c1505f805b8498148989b2409 100644
--- a/tests/data/test1406
+++ b/tests/data/test1406
@@ -38,7 +38,7 @@ smtp://%HOSTIP:%SMTPPORT/user --mail-rcpt 1406@foo --mail-rcpt 1406@foobar.examp
 <verify>
 <protocol>
 EHLO user
-MAIL FROM:<1406@from> SIZE=34
+MAIL FROM:<1406@from> SIZE=38
 RCPT TO:<1406@foo>
 RCPT TO:<1406@foobar.example>
 DATA