diff --git a/src/Composer/Factory.php b/src/Composer/Factory.php
index b068ac2de..9eaf0a3f2 100644
--- a/src/Composer/Factory.php
+++ b/src/Composer/Factory.php
@@ -206,13 +206,10 @@ class Factory
             $localConfig = static::getComposerFile();
         }
 
-        $rfs = Factory::createRemoteFilesystem($io);
-
         if (is_string($localConfig)) {
             $composerFile = $localConfig;
 
-            $rfs = Factory::createRemoteFilesystem($io);
-            $file = new JsonFile($localConfig, $rfs);
+            $file = new JsonFile($localConfig, null, $io);
 
             if (!$file->exists()) {
                 if ($localConfig === './composer.json' || $localConfig === 'composer.json') {
@@ -274,7 +271,7 @@ class Factory
         $composer->setRepositoryManager($rm);
 
         // load local repository
-        $this->addLocalRepository($rm, $vendorDir);
+        $this->addLocalRepository($io, $rm, $vendorDir);
 
         // force-set the version of the global package if not defined as
         // guessing it adds no value and only takes time
@@ -326,7 +323,7 @@ class Factory
                 ? substr($composerFile, 0, -4).'lock'
                 : $composerFile . '.lock';
 
-            $locker = new Package\Locker($io, new JsonFile($lockFile, $rfs), $rm, $im, file_get_contents($composerFile));
+            $locker = new Package\Locker($io, new JsonFile($lockFile, null, $io), $rm, $im, file_get_contents($composerFile));
             $composer->setLocker($locker);
         }
 
@@ -361,9 +358,9 @@ class Factory
      * @param Repository\RepositoryManager $rm
      * @param string                       $vendorDir
      */
-    protected function addLocalRepository(RepositoryManager $rm, $vendorDir)
+    protected function addLocalRepository(IOInterface $io, RepositoryManager $rm, $vendorDir)
     {
-        $rm->setLocalRepository(new Repository\InstalledFilesystemRepository(new JsonFile($vendorDir.'/composer/installed.json')));
+        $rm->setLocalRepository(new Repository\InstalledFilesystemRepository(new JsonFile($vendorDir.'/composer/installed.json', null, $io)));
     }
 
     /**
diff --git a/src/Composer/Json/JsonFile.php b/src/Composer/Json/JsonFile.php
index ee4f04e84..4a6eb89ca 100644
--- a/src/Composer/Json/JsonFile.php
+++ b/src/Composer/Json/JsonFile.php
@@ -16,6 +16,7 @@ use JsonSchema\Validator;
 use Seld\JsonLint\JsonParser;
 use Seld\JsonLint\ParsingException;
 use Composer\Util\RemoteFilesystem;
+use Composer\IO\IOInterface;
 use Composer\Downloader\TransportException;
 
 /**
@@ -35,6 +36,7 @@ class JsonFile
 
     private $path;
     private $rfs;
+    private $io;
 
     /**
      * Initializes json file reader/parser.
@@ -43,7 +45,7 @@ class JsonFile
      * @param  RemoteFilesystem          $rfs  required for loading http/https json files
      * @throws \InvalidArgumentException
      */
-    public function __construct($path, RemoteFilesystem $rfs = null)
+    public function __construct($path, RemoteFilesystem $rfs = null, IOInterface $io = null)
     {
         $this->path = $path;
 
@@ -51,6 +53,7 @@ class JsonFile
             throw new \InvalidArgumentException('http urls require a RemoteFilesystem instance to be passed');
         }
         $this->rfs = $rfs;
+        $this->io = $io;
     }
 
     /**
@@ -83,6 +86,9 @@ class JsonFile
             if ($this->rfs) {
                 $json = $this->rfs->getContents($this->path, $this->path, false);
             } else {
+                if ($this->io && $this->io->isDebug()) {
+                    $this->io->writeError('Reading ' . $this->path);
+                }
                 $json = file_get_contents($this->path);
             }
         } catch (TransportException $e) {
diff --git a/src/Composer/Util/ConfigValidator.php b/src/Composer/Util/ConfigValidator.php
index 1878dcf52..bf1070c62 100644
--- a/src/Composer/Util/ConfigValidator.php
+++ b/src/Composer/Util/ConfigValidator.php
@@ -53,7 +53,7 @@ class ConfigValidator
         // validate json schema
         $laxValid = false;
         try {
-            $json = new JsonFile($file, Factory::createRemoteFilesystem($this->io)); //TODO - can't configure here obviouslyS
+            $json = new JsonFile($file, null, $this->io);
             $manifest = $json->read();
 
             $json->validateSchema(JsonFile::LAX_SCHEMA);