diff --git a/src/Pecee/SimpleRouter/RouterBase.php b/src/Pecee/SimpleRouter/RouterBase.php
index 4246757..90af6dc 100644
--- a/src/Pecee/SimpleRouter/RouterBase.php
+++ b/src/Pecee/SimpleRouter/RouterBase.php
@@ -327,6 +327,10 @@ class RouterBase {
             return $url;
         }
 
+        if($controller === null && $this->loadedRoute !== null) {
+            return $this->processUrl($this->loadedRoute, $this->loadedRoute->getMethod(), $parameters, $getParams);
+        }
+
         $c = '';
         $method = null;
 
diff --git a/src/Pecee/SimpleRouter/RouterEntry.php b/src/Pecee/SimpleRouter/RouterEntry.php
index 435324b..5ed231a 100644
--- a/src/Pecee/SimpleRouter/RouterEntry.php
+++ b/src/Pecee/SimpleRouter/RouterEntry.php
@@ -278,7 +278,7 @@ abstract class RouterEntry {
 
                 if($lastCharacter === '?') {
                     $parameter = substr($parameter, 0, strlen($parameter)-1);
-                    $regex .= '\\/?(?P<'.$parameter.'>[^\/]*)\\/?';
+                    $regex .= '\\/(?:(?P<'.$parameter.'>[^\/]*)\\/?)';
                     $required = false;
                 } else {
                     $regex .= '\\/(?P<' . $parameter . '>'. $parameterRegex .')\\/';
@@ -314,6 +314,10 @@ abstract class RouterEntry {
                         throw new RouterException('Missing required parameter ' . $name['name'], 404);
                     }
 
+                    if(!$name['required'] && $parameterValue === null) {
+                        continue;
+                    }
+
                     $parameters[$name['name']] = $parameterValue;
                 }
             }
diff --git a/src/Pecee/SimpleRouter/RouterRoute.php b/src/Pecee/SimpleRouter/RouterRoute.php
index ec30640..3321728 100644
--- a/src/Pecee/SimpleRouter/RouterRoute.php
+++ b/src/Pecee/SimpleRouter/RouterRoute.php
@@ -2,6 +2,7 @@
 
 namespace Pecee\SimpleRouter;
 
+use Pecee\ArrayUtil;
 use Pecee\Http\Request;
 
 class RouterRoute extends RouterEntry {
@@ -40,11 +41,11 @@ class RouterRoute extends RouterEntry {
 
         if($parameters !== null) {
 
-            if(is_array($this->parameters)) {
-                $this->parameters = array_merge($this->parameters, $parameters);
-            } else {
+            //if(is_array($this->parameters)) {
+            //    $this->parameters = array_merge($this->parameters, $parameters);
+            //} else {
                 $this->parameters = $parameters;
-            }
+            //}
 
             return true;
         }
@@ -74,7 +75,7 @@ class RouterRoute extends RouterEntry {
         if(count($parameters)) {
             $tmp = array();
             foreach($parameters as $param) {
-                $tmp[$param] = '';
+                $tmp[$param] = null;
             }
             $this->parameters = $tmp;
         }