diff --git a/app/controllers/api/functions.php b/app/controllers/api/functions.php
index 9d36830883..810e842e90 100644
--- a/app/controllers/api/functions.php
+++ b/app/controllers/api/functions.php
@@ -467,7 +467,9 @@ App::get('/v1/functions/specifications')
         foreach ($allRuntimeSpecs as $spec) {
             $spec['enabled'] = true;
 
-            $spec = $hooks->trigger('specificationsHandler', [$plan, &$spec]) ?? $spec;
+            if (key_exists('runtimeSpecifications', $plan)) {
+                $spec['enabled'] = in_array($spec['slug'], $plan['runtimeSpecifications']);
+            }
 
             // Only add specs that are within the limits set by environment variables
             if ($spec['cpus'] <= System::getEnv('_APP_FUNCTIONS_CPUS', 1) && $spec['memory'] <= System::getEnv('_APP_FUNCTIONS_MEMORY', 512)) {