diff --git a/src/Routing/Route/PrefixRoute.php b/src/Routing/Route/PrefixRoute.php
index 287529a..37a0d0f 100644
--- a/src/Routing/Route/PrefixRoute.php
+++ b/src/Routing/Route/PrefixRoute.php
@@ -6,8 +6,7 @@ class PrefixRoute extends Route
 {
     public function __construct($target, $methodMap)
     {
-        $this->target = rtrim($target, "*");
-        $this->methodMap = $methodMap;
+        parent::__construct(rtrim($target, "*"), $methodMap);
     }
 
     public function getType()
diff --git a/src/Routing/Router.php b/src/Routing/Router.php
index 8ec4bf2..cf009a2 100644
--- a/src/Routing/Router.php
+++ b/src/Routing/Router.php
@@ -11,7 +11,7 @@ use WellRESTed\Routing\Route\RouteInterface;
 
 class Router implements RouterInterface
 {
-    /** @var string ServerRequestInterface attribute name for matched path variables */
+    /** @var string attribute name for matched path variables */
     private $pathVariablesAttributeName;
     /** @var DispatcherInterface */
     private $dispatcher;
@@ -183,21 +183,30 @@ class Router implements RouterInterface
         $matches = array_filter(
             $prefixes,
             function ($prefix) use ($requestTarget) {
-                return (strrpos($requestTarget, $prefix, -strlen($requestTarget)) !== false);
+                return $this->startsWith($requestTarget, $prefix);
             }
         );
 
         if ($matches) {
             if (count($matches) > 0) {
-                // If there are multiple matches, sort them to find the one with the longest string length.
+                // If there are multiple matches, sort them to find the one with
+                // the longest string length.
                 $compareByLength = function ($a, $b) {
                     return strlen($b) - strlen($a);
                 };
                 usort($matches, $compareByLength);
             }
-            $route = $this->prefixRoutes[$matches[0]];
+            /** @var string $bestMatch */
+            $bestMatch = $matches[0];
+            $route = $this->prefixRoutes[$bestMatch];
             return $route;
         }
         return null;
     }
+
+    function startsWith($haystack, $needle)
+    {
+        $length = strlen($needle);
+        return (substr($haystack, 0, $length) === $needle);
+    }
 }
diff --git a/src/Transmission/Transmitter.php b/src/Transmission/Transmitter.php
index 2d2be36..7dfe965 100644
--- a/src/Transmission/Transmitter.php
+++ b/src/Transmission/Transmitter.php
@@ -12,6 +12,8 @@ class Transmitter implements TransmitterInterface
 {
     /** @var int */
     private $chunkSize = 0;
+    /** @var DispatcherInterface  */
+    private $dispatcher;
 
     public function __construct(DispatcherInterface $dispatcher = null)
     {
@@ -34,8 +36,10 @@ class Transmitter implements TransmitterInterface
      * @param ServerRequestInterface $request
      * @param ResponseInterface $response Response to output
      */
-    public function transmit(ServerRequestInterface $request, ResponseInterface $response)
-    {
+    public function transmit(
+        ServerRequestInterface $request,
+        ResponseInterface $response
+    ) {
         // Prepare the response for output.
         $response = $this->prepareResponse($request, $response);
 
@@ -64,8 +68,10 @@ class Transmitter implements TransmitterInterface
         $this->chunkSize = $chunkSize;
     }
 
-    protected function prepareResponse(ServerRequestInterface $request, ResponseInterface $response)
-    {
+    protected function prepareResponse(
+        ServerRequestInterface $request,
+        ResponseInterface $response
+    ) {
         // Add a Content-length header to the response when all of these are true:
         //
         // - Response does not have a Content-length header