diff --git a/graphiti_core/search/search_utils.py b/graphiti_core/search/search_utils.py
index 5d6828f7..cca7e3b8 100644
--- a/graphiti_core/search/search_utils.py
+++ b/graphiti_core/search/search_utils.py
@@ -61,8 +61,9 @@ MAX_QUERY_LENGTH = 128
 
 
 def fulltext_query(query: str, group_ids: list[str] | None = None, fulltext_syntax: str = ''):
+    # Lucene expects string values (e.g. group_id) to be wrapped in single quotes
     group_ids_filter_list = (
-        [fulltext_syntax + f'group_id:"{g}"' for g in group_ids] if group_ids is not None else []
+        [fulltext_syntax + f"group_id:'{g}'" for g in group_ids] if group_ids is not None else []
     )
     group_ids_filter = ''
     for f in group_ids_filter_list: