diff --git a/src/Composer/Package/Loader/ValidatingArrayLoader.php b/src/Composer/Package/Loader/ValidatingArrayLoader.php
index a6431d2df..1bc2145d3 100644
--- a/src/Composer/Package/Loader/ValidatingArrayLoader.php
+++ b/src/Composer/Package/Loader/ValidatingArrayLoader.php
@@ -623,6 +623,14 @@ class ValidatingArrayLoader implements LoaderInterface
         }
 
         $bits = parse_url($value);
+        if ($bits === false) {
+            return false;
+        }
+
+        if (array_key_exists('path', $bits) && !array_key_exists('scheme', $bits) && !array_key_exists('host', $bits)) {
+            return true;
+        }
+
         if (empty($bits['scheme']) || empty($bits['host'])) {
             return false;
         }
diff --git a/tests/Composer/Test/Package/Loader/ValidatingArrayLoaderTest.php b/tests/Composer/Test/Package/Loader/ValidatingArrayLoaderTest.php
index 9b70911ee..796cc5118 100644
--- a/tests/Composer/Test/Package/Loader/ValidatingArrayLoaderTest.php
+++ b/tests/Composer/Test/Package/Loader/ValidatingArrayLoaderTest.php
@@ -84,6 +84,14 @@ class ValidatingArrayLoaderTest extends TestCase
                         [
                             'url' => 'https://example.org/fund',
                         ],
+                        [
+                            'type' => 'custom',
+                            'url' => 'example.com',
+                        ],
+                        [
+                            'type' => 'custom',
+                            'url' => 'example.com/fund#fundus',
+                        ],
                     ],
                     'require' => [
                         'a/b' => '1.*',
diff --git a/tests/Composer/Test/Repository/Vcs/GitHubDriverTest.php b/tests/Composer/Test/Repository/Vcs/GitHubDriverTest.php
index 9902af644..514572cda 100644
--- a/tests/Composer/Test/Repository/Vcs/GitHubDriverTest.php
+++ b/tests/Composer/Test/Repository/Vcs/GitHubDriverTest.php
@@ -166,7 +166,7 @@ class GitHubDriverTest extends TestCase
                 ['url' => $repoApiUrl, 'body' => '{"master_branch": "test_master", "owner": {"login": "composer"}, "name": "packagist"}'],
                 ['url' => 'https://api.github.com/repos/composer/packagist/contents/composer.json?ref=feature%2F3.2-foo', 'body' => '{"encoding":"base64","content":"'.base64_encode('{"support": {"source": "'.$repoUrl.'" }}').'"}'],
                 ['url' => 'https://api.github.com/repos/composer/packagist/commits/feature%2F3.2-foo', 'body' => '{"commit": {"committer":{ "date": "2012-09-10"}}}'],
-                ['url' => 'https://api.github.com/repos/composer/packagist/contents/.github/FUNDING.yml', 'body' => '{"encoding": "base64", "content": "'.base64_encode("custom: https://example.com").'"}'],
+                ['url' => 'https://api.github.com/repos/composer/packagist/contents/.github/FUNDING.yml', 'body' => '{"encoding": "base64", "content": "'.base64_encode("custom: [\"https://example.com/funding\", octocat.com]").'"}'],
             ],
             true
         );