diff --git a/src/TagEngine.php b/src/TagEngine.php
index f5a6967..1e3b3e4 100644
--- a/src/TagEngine.php
+++ b/src/TagEngine.php
@@ -5,7 +5,6 @@
 
 use LordSimal\CustomHtmlElements\Error\ConfigException;
 use LordSimal\CustomHtmlElements\Error\RegexException;
-use LordSimal\CustomHtmlElements\Error\TagNotFoundException;
 use ReflectionClass;
 use Spatie\StructureDiscoverer\Discover;
 
@@ -47,6 +46,11 @@ class TagEngine
      */
     protected array $discovery_cache = [];
 
+    /**
+     * @var array<string, class-string<\LordSimal\CustomHtmlElements\CustomTag>>
+     */
+    protected array $tags = [];
+
     /**
      * Initialize TagEngine
      *
@@ -57,6 +61,7 @@ public function __construct(array $options = [])
         if ($options) {
             $this->options = array_merge($this->options, $options);
         }
+        $this->tags = TagRegistry::getTags();
         $this->setRegex();
         $this->registerTags();
 
@@ -128,8 +133,17 @@ protected function registerTags(): void
                 // This is quite expensive, so only do it once
                 $classes = Discover::in($tag_directory)->classes()
                     ->extending(CustomTag::class)->get();
-                /** @var \LordSimal\CustomHtmlElements\CustomTag|string $class */
                 foreach ($classes as $class) {
+                    if (!is_subclass_of($class, CustomTag::class)) {
+                        continue;
+                    }
+
+                    $tagName = (new ReflectionClass($class))->getStaticPropertyValue('tag');
+                    if (!is_string($tagName)) {
+                        continue;
+                    }
+
+                    $this->tags[$tagName] = $class;
                     TagRegistry::register($class);
                 }
             }
@@ -236,11 +250,8 @@ protected function parseAttributes(string $attributesString): array
      */
     protected function renderComponent(string $componentName, array $attributes, string $innerContent = ''): string
     {
-        try {
-            $class = TagRegistry::getTag(sprintf('%s-%s', $this->options['component_prefix'], $componentName));
-        } catch (TagNotFoundException) {
-            $class = null;
-        }
+        $tagName = sprintf('%s-%s', $this->options['component_prefix'], $componentName);
+        $class = $this->tags[$tagName] ?? null;
 
         if ($this->options['enable_cache']) {
             $cacheKey = hash('sha256', serialize([
@@ -261,7 +272,8 @@ protected function renderComponent(string $componentName, array $attributes, str
         if ($class !== null) {
             $tag = new $class($attributes, $innerContent);
 
-            if ($tag->disabled) {
+            $properties = get_object_vars($tag);
+            if (($attributes['disabled'] ?? false) || ($properties['disabled'] ?? false)) {
                 return '';
             }
         } else {
diff --git a/tests/RegistryTags/First/Collision.php b/tests/RegistryTags/First/Collision.php
new file mode 100644
index 0000000..e1df58f
--- /dev/null
+++ b/tests/RegistryTags/First/Collision.php
@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace LordSimal\CustomHtmlElements\Test\RegistryTags\First;
+
+use LordSimal\CustomHtmlElements\CustomTag;
+
+class Collision extends CustomTag
+{
+    public static string $tag = 'c-collision';
+
+    public function render(): string
+    {
+        return 'first';
+    }
+}
diff --git a/tests/RegistryTags/Second/Collision.php b/tests/RegistryTags/Second/Collision.php
new file mode 100644
index 0000000..eeb56d8
--- /dev/null
+++ b/tests/RegistryTags/Second/Collision.php
@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace LordSimal\CustomHtmlElements\Test\RegistryTags\Second;
+
+use LordSimal\CustomHtmlElements\CustomTag;
+
+class Collision extends CustomTag
+{
+    public static string $tag = 'c-collision';
+
+    public function render(): string
+    {
+        return 'second';
+    }
+}
diff --git a/tests/TagEngine/TagEngineTest.php b/tests/TagEngine/TagEngineTest.php
index 05eb569..e7a076f 100644
--- a/tests/TagEngine/TagEngineTest.php
+++ b/tests/TagEngine/TagEngineTest.php
@@ -12,6 +12,19 @@
  */
 class TagEngineTest extends TestCase
 {
+    public function testEnginesKeepTheirOwnTagRegistrations(): void
+    {
+        $first = new TagEngine([
+            'tag_directories' => [dirname(__DIR__) . '/RegistryTags/First'],
+        ]);
+        $second = new TagEngine([
+            'tag_directories' => [dirname(__DIR__) . '/RegistryTags/Second'],
+        ]);
+
+        $this->assertSame('first', $first->parse('<c-collision />'));
+        $this->assertSame('second', $second->parse('<c-collision />'));
+    }
+
     public function testCanBeCreatedWithDefaultOptions(): void
     {
         $engine = new TagEngine();