diff --git a/Neos.ContentRepository.Core/Classes/SharedModel/Workspace/WorkspaceName.php b/Neos.ContentRepository.Core/Classes/SharedModel/Workspace/WorkspaceName.php
index 512c52aa368..5a79a2bb378 100644
--- a/Neos.ContentRepository.Core/Classes/SharedModel/Workspace/WorkspaceName.php
+++ b/Neos.ContentRepository.Core/Classes/SharedModel/Workspace/WorkspaceName.php
@@ -38,7 +38,7 @@ private function __construct(
         public readonly string $value
     ) {
         if (!self::hasValidFormat($value)) {
-            throw new \InvalidArgumentException('Invalid workspace name given.', 1505826610);
+            throw new \InvalidArgumentException(sprintf('Invalid workspace name "%s" given. A workspace name has to consist of at most %d lower case characters', $value, self::MAX_LENGTH), 1505826610);
         }
     }