diff --git a/src/block/VanillaBlocks.php b/src/block/VanillaBlocks.php
index f40f52d57..7d2d947c5 100644
--- a/src/block/VanillaBlocks.php
+++ b/src/block/VanillaBlocks.php
@@ -24,7 +24,6 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\utils\CloningRegistryTrait;
-use function assert;
 
 /**
  * This doc-block is generated automatically, do not modify it manually.
diff --git a/src/entity/effect/VanillaEffects.php b/src/entity/effect/VanillaEffects.php
index ba2fc27cf..50bddc941 100644
--- a/src/entity/effect/VanillaEffects.php
+++ b/src/entity/effect/VanillaEffects.php
@@ -26,7 +26,6 @@ namespace pocketmine\entity\effect;
 use pocketmine\color\Color;
 use pocketmine\lang\KnownTranslationFactory;
 use pocketmine\utils\RegistryTrait;
-use function assert;
 
 /**
  * This doc-block is generated automatically, do not modify it manually.
diff --git a/src/item/VanillaItems.php b/src/item/VanillaItems.php
index eba778cba..c817ae686 100644
--- a/src/item/VanillaItems.php
+++ b/src/item/VanillaItems.php
@@ -24,7 +24,6 @@ declare(strict_types=1);
 namespace pocketmine\item;
 
 use pocketmine\utils\CloningRegistryTrait;
-use function assert;
 
 /**
  * This doc-block is generated automatically, do not modify it manually.