diff --git a/typo3/sysext/core/Documentation/Changelog/8.7.x/Important-79647-AddedHookForResolvingCustomLinkTypes.rst b/typo3/sysext/core/Documentation/Changelog/8.7.x/Important-79647-AddedHookForResolvingCustomLinkTypes.rst
index 72bb167815c5c1a9ea32c1f56ce17d24b2f821d6..ed0dd31967a322fcde9051306b28c9cb073806f0 100644
--- a/typo3/sysext/core/Documentation/Changelog/8.7.x/Important-79647-AddedHookForResolvingCustomLinkTypes.rst
+++ b/typo3/sysext/core/Documentation/Changelog/8.7.x/Important-79647-AddedHookForResolvingCustomLinkTypes.rst
@@ -41,7 +41,8 @@ An example implementation for custom links that use `myLinkIdentifier:` as a pre
             return;
          }
 
-         $parameters['result'] = ['myLinkIdentifier' => substr($parameters['urn'], 17)]
+         // Be aware: substr of 17 because of the identifier and the colon
+         $parameters['result'] = ['myLinkIdentifier' => substr($parameters['urn'], 17)];
          $parameters['result']['type'] = 'myLinkIdentifier';
       }
    }