diff --git a/src/Collector/ThemeCollector.php b/src/Collector/ThemeCollector.php
index 284ce7d..a464e9c 100644
--- a/src/Collector/ThemeCollector.php
+++ b/src/Collector/ThemeCollector.php
@@ -55,7 +55,7 @@ public function getUsedTheme(): ?ThemeInterface
     }
 
     /**
-     * @return array|ThemeInterface[]
+     * @return ThemeInterface[]
      */
     public function getUsedThemes(): array
     {