diff --git a/gnucash/report/standard-reports/transaction.scm b/gnucash/report/standard-reports/transaction.scm
index af33bf9145..33704f6560 100644
--- a/gnucash/report/standard-reports/transaction.scm
+++ b/gnucash/report/standard-reports/transaction.scm
@@ -651,11 +651,8 @@
     #f #t))
 
   (gnc:register-trep-option
-   (gnc:make-string-option
+   (gnc:make-internal-option
     gnc:pagename-accounts (N_ "Account Substring")
-    "a5" (N_ "Match only above accounts whose fullname contains substring e.g. ':Travel' will \
-match Expenses:Travel:Holiday and Expenses:Business:Travel. Can be left blank, which will \
-disable the substring filter. This filter is case-sensitive. Gnucash 2.8 or later.")
     ""))
 
   (gnc:register-trep-option