diff --git a/src/Registries/CommandRegistry.php b/src/Registries/CommandRegistry.php
index 7da1a8b..f085473 100644
--- a/src/Registries/CommandRegistry.php
+++ b/src/Registries/CommandRegistry.php
@@ -23,7 +23,7 @@ public function __construct(CommandBusInterface $commandBus)
      */
     public function subscribe($handlers)
     {
-        $this->isTraversable($handlers) ?: [$handlers];
+        $handlers = $this->isTraversable($handlers) ? $handlers : [$handlers];
 
         foreach ($handlers as $commandHandler) {
             $this->commandBus->subscribe($commandHandler);
diff --git a/src/Registries/EventRegistry.php b/src/Registries/EventRegistry.php
index 9bd96a1..c8e5336 100644
--- a/src/Registries/EventRegistry.php
+++ b/src/Registries/EventRegistry.php
@@ -20,7 +20,7 @@ public function __construct(EventBusInterface $eventBus)
      */
     public function subscribe($projectors)
     {
-        $projectors = $this->isTraversable($projectors) ?: [$projectors];
+        $projectors = $this->isTraversable($projectors) ? $projectors : [$projectors];
 
         foreach ($projectors as $projector) {
             $this->eventBus->subscribe($projector);