From 906e961d6692f6d8c84ebab05a03d7d91f2abccd Mon Sep 17 00:00:00 2001
From: shamoon <4887959+shamoon@users.noreply.github.com>
Date: Thu, 13 Aug 2026 09:11:00 -0700
Subject: [PATCH] The ol empty string fun

---
 src/documents/serialisers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/documents/serialisers.py b/src/documents/serialisers.py
index 0d3cc24c3..b2f14b505 100644
--- a/src/documents/serialisers.py
+++ b/src/documents/serialisers.py
@@ -1701,7 +1701,7 @@ class MergeDocumentsAsVersionsSerializer(DocumentListSerializer):
             raise serializers.ValidationError(
                 "At least two documents are required.",
             )
-        if "version_label" in attrs and len(documents) != 2:
+        if attrs.get("version_label") is not None and len(documents) != 2:
             raise serializers.ValidationError(
                 "version_label can only be used when merging one source document.",
             )