diff --git a/typo3/sysext/fluid/Classes/ViewHelpers/FormViewHelper.php b/typo3/sysext/fluid/Classes/ViewHelpers/FormViewHelper.php
index 2313314f55fa4b946030d8851b118990ff544f7e..acdc64b07975d65634f1def32c33c2f81cde45c8 100644
--- a/typo3/sysext/fluid/Classes/ViewHelpers/FormViewHelper.php
+++ b/typo3/sysext/fluid/Classes/ViewHelpers/FormViewHelper.php
@@ -117,7 +117,7 @@ class FormViewHelper extends AbstractFormViewHelper
     {
         parent::initializeArguments();
         $this->registerArgument('action', 'string', 'Target action');
-        $this->registerArgument('arguments', 'array', 'Arguments', false, []);
+        $this->registerArgument('arguments', 'array', 'Arguments (do not use reserved keywords "action", "controller" or "format" if not referring to these internal variables specifically)', false, []);
         $this->registerArgument('controller', 'string', 'Target controller');
         $this->registerArgument('extensionName', 'string', 'Target Extension Name (without `tx_` prefix and no underscores). If NULL the current extension name is used');
         $this->registerArgument('pluginName', 'string', 'Target plugin. If empty, the current plugin name is used');
diff --git a/typo3/sysext/fluid/Classes/ViewHelpers/Link/ActionViewHelper.php b/typo3/sysext/fluid/Classes/ViewHelpers/Link/ActionViewHelper.php
index e5c516d70724165a043c49b3e5652de6a95b65dc..7bab171eb43d2e33e728575ca7bdb74db613dfd1 100644
--- a/typo3/sysext/fluid/Classes/ViewHelpers/Link/ActionViewHelper.php
+++ b/typo3/sysext/fluid/Classes/ViewHelpers/Link/ActionViewHelper.php
@@ -68,7 +68,7 @@ class ActionViewHelper extends AbstractTagBasedViewHelper
         $this->registerArgument('addQueryString', 'bool', 'If set, the current query parameters will be kept in the URI');
         $this->registerArgument('argumentsToBeExcludedFromQueryString', 'array', 'Arguments to be removed from the URI. Only active if $addQueryString = TRUE');
         $this->registerArgument('addQueryStringMethod', 'string', 'This argument is not evaluated anymore and will be removed in TYPO3 v12.');
-        $this->registerArgument('arguments', 'array', 'Arguments for the controller action, associative array');
+        $this->registerArgument('arguments', 'array', 'Arguments for the controller action, associative array (do not use reserved keywords "action", "controller" or "format" if not referring to these internal variables specifically)');
     }
 
     /**
diff --git a/typo3/sysext/fluid/Classes/ViewHelpers/Uri/ActionViewHelper.php b/typo3/sysext/fluid/Classes/ViewHelpers/Uri/ActionViewHelper.php
index b738478a273465dc1e8c77d3d028d20f861ebb22..afc1eec2601cf7518545348727cd31f6b3b31835 100644
--- a/typo3/sysext/fluid/Classes/ViewHelpers/Uri/ActionViewHelper.php
+++ b/typo3/sysext/fluid/Classes/ViewHelpers/Uri/ActionViewHelper.php
@@ -44,7 +44,7 @@ class ActionViewHelper extends AbstractViewHelper
     public function initializeArguments()
     {
         $this->registerArgument('action', 'string', 'Target action');
-        $this->registerArgument('arguments', 'array', 'Arguments', false, []);
+        $this->registerArgument('arguments', 'array', 'Arguments (do not use reserved keywords "action", "controller" or "format" if not referring to these internal variables specifically)', false, []);
         $this->registerArgument('controller', 'string', 'Target controller. If NULL current controllerName is used');
         $this->registerArgument('extensionName', 'string', 'Target Extension Name (without `tx_` prefix and no underscores). If NULL the current extension name is used');
         $this->registerArgument('pluginName', 'string', 'Target plugin. If empty, the current plugin name is used');