diff --git a/core/modules/locale/locale.compare.inc b/core/modules/locale/locale.compare.inc
index 0b0ef65..644a73a 100644
--- a/core/modules/locale/locale.compare.inc
+++ b/core/modules/locale/locale.compare.inc
@@ -258,12 +258,11 @@ function _locale_translation_prepare_project_list($data, $type) {
 function locale_translation_get_additional_projects() {
   $projects = &drupal_static(__FUNCTION__, array());
 
-  // Call hook_locale_translation_additional_project_info for modules.
-  if (empty($projects)) {
+    if (empty($projects)) {
     $hook = 'locale_translation_additional_project_info';
-    foreach (module_implements($hook) as $module) {
-      $projects = module_invoke($module, $hook);
-    }
+
+    // Call hook_locale_translation_additional_project_info for modules.
+    $projects = module_invoke_all($hook);
 
     // Call hook_locale_translation_additional_project_info for themes.
     foreach (list_themes() as $theme => $info) {