diff --git a/tests/data/test1406 b/tests/data/test1406
index 6245c513eb..158d30b36b 100644
--- a/tests/data/test1406
+++ b/tests/data/test1406
@@ -11,6 +11,9 @@ SMTP
 #
 # Server-side
 <reply>
+<servercmd>
+CAPA SIZE
+</servercmd>
 </reply>
 
 #