diff --git a/src/Composer/Package/Locker.php b/src/Composer/Package/Locker.php
index dba5541be..5f491ae9a 100644
--- a/src/Composer/Package/Locker.php
+++ b/src/Composer/Package/Locker.php
@@ -56,12 +56,51 @@ class Locker
         $this->repositoryManager = $repositoryManager;
         $this->installationManager = $installationManager;
         $this->hash = md5($composerFileContents);
-        $this->contentHash = $this->getContentHash($composerFileContents);
+        $this->contentHash = self::getContentHash($composerFileContents);
         $this->loader = new ArrayLoader(null, true);
         $this->dumper = new ArrayDumper();
         $this->process = new ProcessExecutor($io);
     }
 
+    /**
+     * Returns the md5 hash of the sorted content of the composer file.
+     *
+     * @param string $composerFileContents The contents of the composer file.
+     *
+     * @return string
+     */
+    public static function getContentHash($composerFileContents)
+    {
+        $content = json_decode($composerFileContents, true);
+
+        $relevantKeys = array(
+            'name',
+            'version',
+            'require',
+            'require-dev',
+            'conflict',
+            'replace',
+            'provide',
+            'minimum-stability',
+            'prefer-stable',
+            'repositories',
+            'extra',
+        );
+
+        $relevantContent = array();
+
+        foreach (array_intersect($relevantKeys, array_keys($content)) as $key) {
+            $relevantContent[$key] = $content[$key];
+        }
+        if (isset($content['config']['platform'])) {
+            $relevantContent['config']['platform'] = $content['config']['platform'];
+        }
+
+        ksort($relevantContent);
+
+        return md5(json_encode($relevantContent));
+    }
+
     /**
      * Checks whether locker were been locked (lockfile found).
      *
@@ -390,43 +429,4 @@ class Locker
 
         return $datetime ? $datetime->format('Y-m-d H:i:s') : null;
     }
-
-    /**
-     * Returns the md5 hash of the sorted content of the composer file.
-     *
-     * @param string $composerFileContents The contents of the composer file.
-     *
-     * @return string
-     */
-    private function getContentHash($composerFileContents)
-    {
-        $content = json_decode($composerFileContents, true);
-
-        $relevantKeys = array(
-            'name',
-            'version',
-            'require',
-            'require-dev',
-            'conflict',
-            'replace',
-            'provide',
-            'minimum-stability',
-            'prefer-stable',
-            'repositories',
-            'extra',
-        );
-
-        $relevantContent = array();
-
-        foreach (array_intersect($relevantKeys, array_keys($content)) as $key) {
-            $relevantContent[$key] = $content[$key];
-        }
-        if (isset($content['config']['platform'])) {
-            $relevantContent['config']['platform'] = $content['config']['platform'];
-        }
-
-        ksort($relevantContent);
-
-        return md5(json_encode($relevantContent));
-    }
 }
diff --git a/src/Composer/Repository/PathRepository.php b/src/Composer/Repository/PathRepository.php
index b06f2842a..ad6b2c6a3 100644
--- a/src/Composer/Repository/PathRepository.php
+++ b/src/Composer/Repository/PathRepository.php
@@ -16,6 +16,7 @@ use Composer\Config;
 use Composer\IO\IOInterface;
 use Composer\Json\JsonFile;
 use Composer\Package\Loader\ArrayLoader;
+use Composer\Package\Locker;
 use Composer\Package\Version\VersionGuesser;
 use Composer\Semver\VersionParser;
 use Composer\Util\ProcessExecutor;
@@ -122,7 +123,7 @@ class PathRepository extends ArrayRepository
             if (is_dir($path.'/.git') && 0 === $this->process->execute('git log -n1 --pretty=%H', $output, $path)) {
                 $package['dist']['reference'] = trim($output);
             } else {
-                $package['dist']['reference'] = sha1($json);
+                $package['dist']['reference'] = Locker::getContentHash($json);
             }
 
             $package = $this->loader->load($package);