diff --git a/test/fixtures/mail_handler/ticket_on_given_project.eml b/test/fixtures/mail_handler/ticket_on_given_project.eml
index 9cfab2a06..b39e70148 100644
--- a/test/fixtures/mail_handler/ticket_on_given_project.eml
+++ b/test/fixtures/mail_handler/ticket_on_given_project.eml
@@ -38,7 +38,7 @@ Assigned to: John Smith
 fixed version: alpha
 estimated hours: 2.5
 done ratio: 30
-parent issue: 1
+parent issue: 4
 
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