diff --git a/doc/03-cli.md b/doc/03-cli.md
index 6070b8509..0768c1892 100644
--- a/doc/03-cli.md
+++ b/doc/03-cli.md
@@ -493,7 +493,7 @@ php composer.phar validate
 
 ### Options
 
-* **--no-check-all:** Do not emit a warning if requirements in `composer.json` use unbound version constraints.
+* **--no-check-all:** Do not emit a warning if requirements in `composer.json` use unbound or overly strict version constraints.
 * **--no-check-lock:** Do not emit an error if `composer.lock` exists and is not up to date.
 * **--no-check-publish:** Do not emit an error if `composer.json` is unsuitable for publishing as a package on Packagist but is otherwise valid.
 * **--with-dependencies:** Also validate the composer.json of all installed dependencies.
diff --git a/src/Composer/Command/ValidateCommand.php b/src/Composer/Command/ValidateCommand.php
index b86fd92ea..52023e528 100644
--- a/src/Composer/Command/ValidateCommand.php
+++ b/src/Composer/Command/ValidateCommand.php
@@ -39,7 +39,7 @@ class ValidateCommand extends BaseCommand
             ->setName('validate')
             ->setDescription('Validates a composer.json and composer.lock.')
             ->setDefinition(array(
-                new InputOption('no-check-all', null, InputOption::VALUE_NONE, 'Do not make a complete validation'),
+                new InputOption('no-check-all', null, InputOption::VALUE_NONE, 'Do not validate requires for overly strict/loose constraints'),
                 new InputOption('no-check-lock', null, InputOption::VALUE_NONE, 'Do not check if lock file is up to date'),
                 new InputOption('no-check-publish', null, InputOption::VALUE_NONE, 'Do not check for publish errors'),
                 new InputOption('with-dependencies', 'A', InputOption::VALUE_NONE, 'Also validate the composer.json of all installed dependencies'),