diff --git a/src/backend/core/api/serializers.py b/src/backend/core/api/serializers.py
index 266e680c..2471eced 100644
--- a/src/backend/core/api/serializers.py
+++ b/src/backend/core/api/serializers.py
@@ -980,5 +980,5 @@ class ThreadSerializer(serializers.ModelSerializer):
 class SearchDocumentSerializer(serializers.Serializer):
     """Serializer for fulltext search requests through Find application"""
 
-    q = serializers.CharField(required=True, allow_blank=False, trim_whitespace=True)
+    q = serializers.CharField(required=True, allow_blank=True, trim_whitespace=True)
     path = serializers.CharField(required=False, allow_blank=False)