diff --git a/src/RAG/Splitters/DocumentSplitter.php b/src/RAG/Splitters/DocumentSplitter.php
index 5d0b0d19..18290196 100644
--- a/src/RAG/Splitters/DocumentSplitter.php
+++ b/src/RAG/Splitters/DocumentSplitter.php
@@ -24,6 +24,7 @@ public static function splitDocument(Document $document, int $maxLength = 1000,
         }
 
         if (\strlen($text) <= $maxLength) {
+            if (empty($document->hash)) $document->hash = \hash('sha256', $text);
             return [$document];
         }