diff --git a/src/ai-bundle/config/options.php b/src/ai-bundle/config/options.php
index ba5c545e6..86ee44f31 100644
--- a/src/ai-bundle/config/options.php
+++ b/src/ai-bundle/config/options.php
@@ -142,7 +142,7 @@
                                 ->ifArray()
                                 ->then(function (array $v) {
                                     if (!isset($v['text']) && !isset($v['include_tools'])) {
-                                        throw new \InvalidArgumentException('Either "text" must be configured for prompt.');
+                                        throw new \InvalidArgumentException('Either "text" or "include_tools" must be configured for prompt.');
                                     }
 
                                     return $v;