diff --git a/src/Composer/Downloader/ArchiveDownloader.php b/src/Composer/Downloader/ArchiveDownloader.php
index 570de63d8398..4f2467d71e3c 100644
--- a/src/Composer/Downloader/ArchiveDownloader.php
+++ b/src/Composer/Downloader/ArchiveDownloader.php
@@ -120,7 +120,9 @@ public function install(PackageInterface $package, $path, $output = true)
         }
 
         return $promise->then(function () use ($self, $package, $filesystem, $fileName, $temporaryDir, $path) {
-            $filesystem->unlink($fileName);
+            if (file_exists($fileName)) {
+                $filesystem->unlink($fileName);
+            }
 
             /**
              * Returns the folder content, excluding .DS_Store
diff --git a/src/Composer/Downloader/ZipDownloader.php b/src/Composer/Downloader/ZipDownloader.php
index a86d1da6b549..ca379072a668 100644
--- a/src/Composer/Downloader/ZipDownloader.php
+++ b/src/Composer/Downloader/ZipDownloader.php
@@ -184,7 +184,8 @@ public function extractWithZipArchive(PackageInterface $package, $file, $path)
         $zipArchive = $this->zipArchiveObject ?: new ZipArchive();
 
         try {
-            if (true === ($retval = $zipArchive->open($file))) {
+            $retval = -1;
+            if (file_exists($file) && filesize($file) > 0 && true === ($retval = $zipArchive->open($file))) {
                 $extractResult = $zipArchive->extractTo($path);
 
                 if (true === $extractResult) {
@@ -251,6 +252,8 @@ protected function getErrorMessage($retval, $file)
                 return sprintf("Zip read error (%s)", $file);
             case ZipArchive::ER_SEEK:
                 return sprintf("Zip seek error (%s)", $file);
+            case -1:
+                return sprintf("'%s' is a corrupted zip archive (0 bytes), try again.", $file);
             default:
                 return sprintf("'%s' is not a valid zip archive, got error code: %s", $file, $retval);
         }