diff --git a/webservice/externallib.php b/webservice/externallib.php
index 7b006d6e1b1..4a6f2d0bda5 100644
--- a/webservice/externallib.php
+++ b/webservice/externallib.php
@@ -173,7 +173,8 @@ class core_webservice_external extends external_api {
                     new external_single_structure(
                         array(
                             'name' => new external_value(PARAM_RAW, 'function name'),
-                            'version' => new external_value(PARAM_FLOAT, 'The version number of moodle site/local plugin linked to the function')
+                            'version' => new external_value(PARAM_TEXT,
+                                        'The version number of the component to which the function belongs')
                         ), 'functions that are available')
                     ),
                 'downloadfiles'  => new external_value(PARAM_INT, '1 if users are allowed to download files, 0 if not', VALUE_OPTIONAL),
@@ -237,4 +238,4 @@ class moodle_webservice_external extends external_api {
     public static function get_siteinfo_returns() {
         return core_webservice_external::get_site_info_returns();
     }
-}
\ No newline at end of file
+}