diff --git a/src/Composer/Package/Locker.php b/src/Composer/Package/Locker.php
index 3d069af80..529ae8e32 100644
--- a/src/Composer/Package/Locker.php
+++ b/src/Composer/Package/Locker.php
@@ -61,7 +61,7 @@ class Locker
         $lockList = $this->lockFile->read();
         $packages = array();
         foreach ($lockList as $info) {
-            $package = $this->repositoryManager->findPackage($info['package'], $info['version']);
+            $package = $this->repositoryManager->getLocalRepository()->findPackage($info['package'], $info['version']);
 
             if (!$package) {
                 throw new \LogicException(sprintf(
diff --git a/tests/Composer/Test/Package/LockerTest.php b/tests/Composer/Test/Package/LockerTest.php
index 49482d9d4..6ff2f6da0 100644
--- a/tests/Composer/Test/Package/LockerTest.php
+++ b/tests/Composer/Test/Package/LockerTest.php
@@ -68,7 +68,7 @@ class LockerTest extends \PHPUnit_Framework_TestCase
         $package1 = $this->createPackageMock();
         $package2 = $this->createPackageMock();
 
-        $repo
+        $repo->getLocalRepository()
             ->expects($this->exactly(2))
             ->method('findPackage')
             ->with($this->logicalOr('pkg1', 'pkg2'), $this->logicalOr('1.0.0-beta', '0.1.10'))
@@ -99,7 +99,7 @@ class LockerTest extends \PHPUnit_Framework_TestCase
         $package1 = $this->createPackageMock();
         $package2 = $this->createPackageMock();
 
-        $repo
+        $repo->getLocalRepository()
             ->expects($this->exactly(2))
             ->method('findPackage')
             ->with($this->logicalOr('pkg1', 'pkg2'), $this->logicalOr('1.0.0-beta', '0.1.10'))
@@ -176,9 +176,15 @@ class LockerTest extends \PHPUnit_Framework_TestCase
 
     private function createRepositoryManagerMock()
     {
-        return $this->getMockBuilder('Composer\Repository\RepositoryManager')
+        $mock = $this->getMockBuilder('Composer\Repository\RepositoryManager')
             ->disableOriginalConstructor()
             ->getMock();
+
+        $mock->expects($this->any())
+            ->method('getLocalRepository')
+            ->will($this->returnValue($this->getMockBuilder('Composer\Repository\ArrayRepository')->getMock()));
+
+        return $mock;
     }
 
     private function createPackageMock()