diff --git a/l10n_update.project.inc b/l10n_update.project.inc
index 3e8c704..bafa98e 100644
--- a/l10n_update.project.inc
+++ b/l10n_update.project.inc
@@ -51,13 +51,15 @@ function l10n_update_build_projects() {
       // Find out if a dev version is installed.
       if (preg_match("/^[0-9]+\.x-([0-9]+)\..*-dev$/", $data['info']['version'], $matches)) {
         // Find a suitable release to use as alternative translation.
-        foreach ($projects_info[$name]['releases'] as $project_release) {
-          // The first release with the same major release number which is not 
-          // a dev release is the one. Releases are sorted the most recent first.
-          if ($project_release['version_major'] == $matches[1] &&
-              (!isset($project_release['version_extra']) || $project_release['version_extra'] != 'dev')) {
-            $release = $project_release;
-            break;
+        if (isset($projects_info[$name]['releases'])) {
+          foreach ($projects_info[$name]['releases'] as $project_release) {
+            // The first release with the same major release number which is not 
+            // a dev release is the one. Releases are sorted the most recent first.
+            if ($project_release['version_major'] == $matches[1] &&
+                (!isset($project_release['version_extra']) || $project_release['version_extra'] != 'dev')) {
+              $release = $project_release;
+              break;
+            }
           }
         }
       }