diff --git a/src/View/Helper/RnaHelper.php b/src/View/Helper/RnaHelper.php
index d0ec08e..8dc5709 100644
--- a/src/View/Helper/RnaHelper.php
+++ b/src/View/Helper/RnaHelper.php
@@ -4,7 +4,6 @@
 namespace Chialab\Vite\View\Helper;
 
 use Cake\View\Helper;
-use function Cake\Core\pluginSplit;
 
 /**
  * Rna compatible helper
@@ -66,11 +65,6 @@ public function devServer(?string $pluginName = null, ?array $options = []): str
      */
     public function css(string $asset, array $options = []): string
     {
-        [$group, $asset] = pluginSplit($asset);
-        if ($group !== null) {
-            return $this->Vite->css($group . '/' . $asset, $options);
-        }
-
         return $this->Vite->css($asset, $options);
     }
 
@@ -83,11 +77,6 @@ public function css(string $asset, array $options = []): string
      */
     public function script(string $asset, array $options = []): string
     {
-        [$group, $asset] = pluginSplit($asset);
-        if ($group !== null) {
-            return $this->Vite->js($group . '/' . $asset, $options);
-        }
-
         return $this->Vite->js($asset, $options);
     }
 }
diff --git a/src/View/Helper/ViteHelper.php b/src/View/Helper/ViteHelper.php
index 69141ef..b82a980 100644
--- a/src/View/Helper/ViteHelper.php
+++ b/src/View/Helper/ViteHelper.php
@@ -6,6 +6,7 @@
 use Cake\Core\Configure;
 use Cake\View\Helper;
 use RuntimeException;
+use function Cake\Core\pluginSplit;
 
 /**
  * ViteHelper
@@ -64,6 +65,8 @@ class ViteHelper extends Helper
     public function css(string $entry, array $options = []): string
     {
         $mode = $this->mode();
+        $entry = $this->normalizeEntry($entry);
+
         if ($mode === 'development') {
             return $this->devCss($entry, $options);
         }
@@ -91,6 +94,7 @@ public function css(string $entry, array $options = []): string
     public function js(string $entry, array $options = []): string
     {
         $mode = $this->mode();
+        $entry = $this->normalizeEntry($entry);
 
         if ($mode === 'development') {
             return $this->devJs($entry, $options);
@@ -123,6 +127,22 @@ protected function devClient(): string
         );
     }
 
+    /**
+     * Converts a logical entry name to the format used in the manifest.
+     *
+     * @param string $entry The logical name of the entry (e.g. "PluginName.entry").
+     * @return string The manifest-compatible entry name (e.g. "PluginName/entry").
+     */
+    protected function normalizeEntry(string $entry): string
+    {
+        [$plugin, $name] = pluginSplit($entry);
+        if ($plugin === null) {
+            return $name;
+        }
+
+        return $plugin . '/' . $name;
+    }
+
     /**
      * In dev, return the slots for an entry from the manifest inputs.
      *