Suggested modification to generateRouteName() function from RestActionReader.php (FosRestBundle) to fix a bug.

RestActionReader.php

<?php
    /**
     * Generates route name from resources list.
     *
     * @param array $resources
     * @param \ReflectionMethod $method
     *
     * @return string
     */
    private function generateRouteName(array $resources, \ReflectionMethod $method)
    {
        $routeName = '';
        foreach ($resources as $resource) {
            if (null !== $resource) {
                // Checks if the resource is an uncountable word and if the method call is a collection get action.
                if ($method->name == 'cgetAction'
                    && true == in_array(strtolower($resource), Pluralization::$uncountables)
                ) {
                    // If both are true then we add '_collection' to the route name to
                    // avoid a potential duplicate with the get action for a single resource.
                    $routeName .= '_collection';
                }
                $routeName .= '_' . basename($resource);
            }
        }

        return $routeName;
    }