From 117b7ea0330871a03573f75a6c63d5fc447ba4d3 Mon Sep 17 00:00:00 2001
From: Rob Bast <rob.bast@gmail.com>
Date: Wed, 8 Apr 2015 14:25:53 +0200
Subject: [PATCH] Fixes #3900

---
 src/Composer/Package/Version/VersionSelector.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Package/Version/VersionSelector.php b/src/Composer/Package/Version/VersionSelector.php
index b26f8915f..ffae6e2c9 100644
--- a/src/Composer/Package/Version/VersionSelector.php
+++ b/src/Composer/Package/Version/VersionSelector.php
@@ -44,7 +44,7 @@ class VersionSelector
     public function findBestCandidate($packageName, $targetPackageVersion = null)
     {
         $constraint = $targetPackageVersion ? $this->getParser()->parseConstraints($targetPackageVersion) : null;
-        $candidates = $this->pool->whatProvides($packageName, $constraint, true);
+        $candidates = $this->pool->whatProvides(strtolower($packageName), $constraint, true);
 
         if (!$candidates) {
             return false;