diff --git a/src/LocalMirror.php b/src/LocalMirror.php
index a6a41fd..e2972a2 100644
--- a/src/LocalMirror.php
+++ b/src/LocalMirror.php
@@ -126,8 +126,8 @@ class LocalMirror {
 
         $child_repos = [];
         foreach(SuperProject::readSubmoduleConfig($dst_dir) as $name => $values) {
-            if (empty($values['path']) { throw \RuntimeException("Missing path.");
-            if (empty($values['url']) { throw \RuntimeException("Missing URL.");
+            if (empty($values['path'])) { throw \RuntimeException("Missing path."); }
+            if (empty($values['url'])) { throw \RuntimeException("Missing URL."); }
             $child_repos[$values['path']] = self::resolveGithubUrl($values['url'], $repo);
         }
 
diff --git a/src/SuperProject.php b/src/SuperProject.php
index 89c2779..6653166 100644
--- a/src/SuperProject.php
+++ b/src/SuperProject.php
@@ -176,8 +176,10 @@ class SuperProject extends Repo {
      * @return Array
      */
     static function currentHashes($repo_path, $paths, $ref = 'HEAD') {
-        $matches = null;
         $hashes = Array();
+        if (!$paths) { return $hashes; }
+
+        $matches = null;
         foreach (Process::read_lines(
             "git ls-tree {$ref} ". implode(' ', $paths),
             $repo_path) as $line)