diff --git a/src/Application/AbstractApplication.php b/src/Application/AbstractApplication.php
index d5f55412..2392ab0d 100644
--- a/src/Application/AbstractApplication.php
+++ b/src/Application/AbstractApplication.php
@@ -71,9 +71,9 @@ public function getEventsManager(): ?ManagerInterface
      * Gets the module definition registered in the application via module name
      *
      * @param string $name *
-     * @return array|mixed
+     * @return array|object
      */
-    public function getModule(string $name): array
+    public function getModule(string $name)
     {
     }
 
diff --git a/src/Dispatcher/AbstractDispatcher.php b/src/Dispatcher/AbstractDispatcher.php
index ec84205f..b37aaff9 100644
--- a/src/Dispatcher/AbstractDispatcher.php
+++ b/src/Dispatcher/AbstractDispatcher.php
@@ -171,7 +171,7 @@ public function callActionMethod($handler, string $actionMethod, array $params =
      *
      * @throws \Exception if any uncaught or unhandled exception occurs during the dispatcher process.
      */
-    public function dispatch(): bool
+    public function dispatch()
     {
     }
 
diff --git a/src/Dispatcher/DispatcherInterface.php b/src/Dispatcher/DispatcherInterface.php
index 2a2b5a83..30a901cf 100644
--- a/src/Dispatcher/DispatcherInterface.php
+++ b/src/Dispatcher/DispatcherInterface.php
@@ -20,7 +20,7 @@ interface DispatcherInterface
      *
      * @return mixed
      */
-    public function dispatch(): bool;
+    public function dispatch();
 
     /**
      * Forwards the execution flow to another controller/action
diff --git a/src/Helper/Json.php b/src/Helper/Json.php
index caab0ece..1ddd0f36 100644
--- a/src/Helper/Json.php
+++ b/src/Helper/Json.php
@@ -67,7 +67,7 @@ final public static function decode(string $data, bool $associative = false, int
      * @param int    $options     Bitmask of JSON decode options.
      * @param int    $depth       Recursion depth.
      *
-     * @return mixed
+     * @return string
      *
      * @throws \InvalidArgumentException if the JSON cannot be encoded.
      * @link http://www.php.net/manual/en/function.json-encode.php
diff --git a/src/Mvc/Model/Binder.php b/src/Mvc/Model/Binder.php
index 2644edc5..e25dd177 100644
--- a/src/Mvc/Model/Binder.php
+++ b/src/Mvc/Model/Binder.php
@@ -99,7 +99,7 @@ public function bindToHandler($handler, array $params, string $cacheKey, string
      * @param mixed $paramValue
      * @param string $className
      */
-    protected function findBoundModel($paramValue, string $className): bool
+    protected function findBoundModel($paramValue, string $className)
     {
     }