diff --git a/src/Composer/IO/IOInterface.php b/src/Composer/IO/IOInterface.php
index 75c86de20..5766ba479 100644
--- a/src/Composer/IO/IOInterface.php
+++ b/src/Composer/IO/IOInterface.php
@@ -103,8 +103,8 @@ interface IOInterface
     /**
      * Asks a question to the user.
      *
-     * @param string|array $question The question to ask
-     * @param string       $default  The default answer if none is given by the user
+     * @param string $question The question to ask
+     * @param string $default  The default answer if none is given by the user
      *
      * @throws \RuntimeException If there is no data to read in the input stream
      * @return string            The user answer
@@ -116,8 +116,8 @@ interface IOInterface
      *
      * The question will be asked until the user answers by nothing, yes, or no.
      *
-     * @param string|array $question The question to ask
-     * @param bool         $default  The default answer if the user enters nothing
+     * @param string $question The question to ask
+     * @param bool   $default  The default answer if the user enters nothing
      *
      * @return bool true if the user has confirmed, false otherwise
      */
@@ -130,10 +130,10 @@ interface IOInterface
      * validated data when the data is valid and throw an exception
      * otherwise.
      *
-     * @param string|array $question  The question to ask
-     * @param callable     $validator A PHP callback
-     * @param null|int     $attempts  Max number of times to ask before giving up (default of null means infinite)
-     * @param mixed        $default   The default answer if none is given by the user
+     * @param string   $question  The question to ask
+     * @param callable $validator A PHP callback
+     * @param null|int $attempts  Max number of times to ask before giving up (default of null means infinite)
+     * @param mixed    $default   The default answer if none is given by the user
      *
      * @throws \Exception When any of the validators return an error
      * @return mixed
@@ -152,12 +152,12 @@ interface IOInterface
     /**
      * Asks the user to select a value.
      *
-     * @param string|array $question     The question to ask
-     * @param array        $choices      List of choices to pick from
-     * @param bool|string  $default      The default answer if the user enters nothing
-     * @param bool|int     $attempts     Max number of times to ask before giving up (false by default, which means infinite)
-     * @param string       $errorMessage Message which will be shown if invalid value from choice list would be picked
-     * @param bool         $multiselect  Select more than one value separated by comma
+     * @param string      $question     The question to ask
+     * @param array       $choices      List of choices to pick from
+     * @param bool|string $default      The default answer if the user enters nothing
+     * @param bool|int    $attempts     Max number of times to ask before giving up (false by default, which means infinite)
+     * @param string      $errorMessage Message which will be shown if invalid value from choice list would be picked
+     * @param bool        $multiselect  Select more than one value separated by comma
      *
      * @throws \InvalidArgumentException
      * @return int|string|array          The selected value or values (the key of the choices array)