diff --git a/src/NamedParameter.php b/src/NamedParameter.php
index c06b9075..9a4de633 100644
--- a/src/NamedParameter.php
+++ b/src/NamedParameter.php
@@ -844,7 +844,7 @@ public function getMatchPattern()
         if ($this->validationPattern) {
             $pattern = $this->validationPattern;
         } elseif ($enum = $this->getEnum()) {
-            $pattern = '^(' . implode('\|', array_map('preg_quote', $enum)) . ')$';
+            $pattern = '^(' . implode('|', array_map('preg_quote', $enum)) . ')$';
         } else {
             switch ($this->getType()) {
                 case self::TYPE_NUMBER:
diff --git a/src/Resource.php b/src/Resource.php
index a36ccbd3..8851f0ce 100644
--- a/src/Resource.php
+++ b/src/Resource.php
@@ -200,11 +200,11 @@ public function matchesUri($uri)
             if ('^' === $matchPattern[0]) {
                 $matchPattern = substr($matchPattern, 1);
             }
-            
+
             if ('$' === substr($matchPattern, -1)) {
                 $matchPattern = substr($matchPattern, 0, -1);
             }
-            
+
             $regexUri = str_replace(
                 '/{'.$uriParameter->getKey().'}',
                 '/'.$matchPattern,
@@ -221,7 +221,7 @@ public function matchesUri($uri)
 
         $regexUri = preg_replace('/\/{.*}/U', '\/([^/]+)', $regexUri);
         $regexUri = preg_replace('/\/~{.*}/U', '\/([^/]*)', $regexUri);
-        $regexUri =  '|^' . $regexUri . '$|';
+        $regexUri = chr(128).'^'.$regexUri.'$'.chr(128);
 
         return (bool) preg_match($regexUri, $uri);
     }
diff --git a/test/NamedParameters/UriParameterTest.php b/test/NamedParameters/UriParameterTest.php
index 00de4ea0..689e8513 100644
--- a/test/NamedParameters/UriParameterTest.php
+++ b/test/NamedParameters/UriParameterTest.php
@@ -60,4 +60,26 @@ public function shouldCorrectlyParseRegexUriParameters()
         $resource = $apiDef->getResourceByUri('/user/alec');
         $this->assertInstanceOf('\Raml\Resource', $resource);
     }
+
+    /** @test */
+    public function shouldCorrectlyParseEnumUriParameters()
+    {
+        $raml = <<<RAML
+#%RAML 0.8
+title: User API
+version: 1.2
+/user:
+  /{userName}:
+    displayName: Get a user by name
+    uriParameters:
+      userName:
+        enum: [one, two]        
+    get:
+      displayName: retrieve a user's picture by user name
+RAML;
+
+        $apiDef = $this->parser->parseFromString($raml, '');
+        $resource = $apiDef->getResourceByUri('/user/one');
+        $this->assertInstanceOf('\Raml\Resource', $resource);
+    }
 }