diff --git a/schema/idea.schema b/schema/idea.schema
index 2f3e8f209509b189032901cc1b01267c084ec212..c6acf2754d9b5fdef4d7602479060074d40ad167 100644
--- a/schema/idea.schema
+++ b/schema/idea.schema
@@ -49,7 +49,7 @@
             "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}[Tt ][0-9]{2}:[0-9]{2}:[0-9]{2}(?:\\.[0-9]+)?(?:[Zz]|(?:[+-][0-9]{2}:[0-9]{2}))?$"
         },
         "Duration": {
-            "description": "String, containing time offset, intended for representing difference between two timestamps. Format is time part of [[http://tools.ietf.org/html/rfc3339|RFC 3339]], optionally prepended by \"D\" or \"d\" separator and number of days (which can have arbitrary number number of digits). \"D\" separator has been chosen to distinguish from internet time, and as a memory aid for \"duration\" or \"days\". For example \"536D10:20:30.5\" means 536 days day, 10 hours, 20 seconds, 30.5 seconds, whereas 00:05:00 represents five minutes.\n\n[[http://tools.ietf.org/html/rfc2234|ABNF]] syntax:\n{{{\ntime-hour       = 2DIGIT  ; 00-23\ntime-minute     = 2DIGIT  ; 00-59\ntime-second     = 2DIGIT  ; 00-59\ntime-secfrac    = \".\" 1*DIGIT\nseparator       = \"D\" / \"d\"\ndays            = 1*DIGIT\n\nduration        = [days separator] time-hour \":\" time-minute \":\" time-second [time-secfrac]\n}}}",
+            "description": "String, containing time offset, intended for representing difference between two timestamps. Format is time part of [[http://tools.ietf.org/html/rfc3339|RFC 3339]], optionally prepended by \"D\" or \"d\" separator and number of days (which can have arbitrary number number of digits). \"D\" separator has been chosen to distinguish from internet time, and as a memory aid for \"duration\" or \"days\". For example \"536D10:20:30.5\" means 536 days, 10 hours, 20 seconds, 30.5 seconds, whereas 00:05:00 represents five minutes.\n\n[[http://tools.ietf.org/html/rfc2234|ABNF]] syntax:\n{{{\ntime-hour       = 2DIGIT  ; 00-23\ntime-minute     = 2DIGIT  ; 00-59\ntime-second     = 2DIGIT  ; 00-59\ntime-secfrac    = \".\" 1*DIGIT\nseparator       = \"D\" / \"d\"\ndays            = 1*DIGIT\n\nduration        = [days separator] time-hour \":\" time-minute \":\" time-second [time-secfrac]\n}}}",
             "type": "string",
             "format": "date-time",
             "pattern": "^(?:[0-9]+[Dd])?[0-9]{2}:[0-9]{2}:[0-9]{2}(?:\\.[0-9]+)?$"