diff --git a/src/RobotsTxt.php b/src/RobotsTxt.php
index f5d0e14..5520b9e 100644
--- a/src/RobotsTxt.php
+++ b/src/RobotsTxt.php
@@ -253,7 +253,7 @@ protected function parseUserAgent(string $line): string
 
     protected function parseDisallow(string $line): string
     {
-        return trim(substr_replace(strtolower(trim($line)), '', 0, 8), ': ');
+        return trim(substr_replace(trim($line), '', 0, 8), ': ');
     }
 
     protected function isDisallowLine(string $line): string
diff --git a/tests/RobotsTxtTest.php b/tests/RobotsTxtTest.php
index 290848a..55da2ed 100644
--- a/tests/RobotsTxtTest.php
+++ b/tests/RobotsTxtTest.php
@@ -149,6 +149,15 @@ public function the_disallows_user_agent_check_is_case_insensitive()
         $this->assertFalse($robots->allows('/no-agents', strtolower('UserAgent007')));
     }
 
+    /** @test */
+    public function the_disallows_uri_check_is_case_sensitive()
+    {
+        $robots = RobotsTxt::readFrom(__DIR__.'/data/robots.txt');
+
+        $this->assertFalse($robots->allows('/Case-Sensitive/Disallow'));
+        $this->assertTrue($robots->allows(strtolower('/Case-Sensitive/Disallow')));
+    }
+
     /** @test */
     public function it_can_handle_multiple_user_agent_query_strings()
     {
diff --git a/tests/data/robots.txt b/tests/data/robots.txt
index bce017c..13a388b 100644
--- a/tests/data/robots.txt
+++ b/tests/data/robots.txt
@@ -7,6 +7,7 @@ Disallow: /nl/admin/
 Disallow: /en/admin/*
 Disallow: /fr/admin$
 Disallow: /es/admin-disallow/
+Disallow: /Case-Sensitive/Disallow
 User-agent: google
 
 Disallow: /