diff --git a/l10n_update.compare.inc b/l10n_update.compare.inc
index f222ce7b..8cd74a21 100644
--- a/l10n_update.compare.inc
+++ b/l10n_update.compare.inc
@@ -47,16 +47,17 @@ function l10n_update_build_projects($refresh = FALSE) {
     $default_server = l10n_update_default_translation_server();
 
     foreach ($projects as $name => $data) {
-      // For dev releases, remove the '-dev' part and trust the translation
-      // server to fall back to the latest stable release for that branch.
+      // For dev releases, remove the '-dev' or '+xx-dev' part and fall back to
+      // the unmodified release for that branch.
       if (isset($data['info']['version']) && strpos($data['info']['version'], '-dev')) {
-        if (preg_match("/^(\d+\.x-\d+\.).*$/", $data['info']['version'], $matches)) {
-          // Example matches: 7.x-1.x-dev, 7.x-1.0-alpha1+5-dev => 7.x-1.x.
-          $data['info']['version'] = $matches[1] . 'x';
+        // Version ahead of release? Split on '+', otherwise just on '-dev'.
+        if (strpos($data['info']['version'], "+")) {
+          $version_array = explode("+", $data['info']['version']);
+          $data['info']['version'] = $version_array[0];
         }
-        elseif (preg_match("/^(\d+\.).*$/", $data['info']['version'], $matches)) {
-          // Example match: 7.33-dev => 7.x (Drupal core).
-          $data['info']['version'] = $matches[1] . 'x';
+        else {
+          $version_array = explode("-dev", $data['info']['version']);
+          $data['info']['version'] = $version_array[0];
         }
       }