diff --git a/backend/open_webui/models/chats.py b/backend/open_webui/models/chats.py
index b0881bc6c3..933dcce4dc 100644
--- a/backend/open_webui/models/chats.py
+++ b/backend/open_webui/models/chats.py
@@ -2180,7 +2180,8 @@ class ChatTable:
         search_text_words = [word for word in search_text_words if not word.startswith(CHAT_SEARCH_FILTER_PREFIXES)]
 
         phrase_query = ' '.join(search_text_words).strip()
-        search_terms = chat_search_terms(phrase_query)
+        # A single-word query is already fully covered by the phrase match
+        search_terms = [term for term in chat_search_terms(phrase_query) if term != phrase_query]
 
         async with get_async_db_context(db) as session:
             stmt = select(Chat).filter(Chat.user_id == user_id)