diff --git a/lightrag/api/lightrag_ollama.py b/lightrag/api/lightrag_ollama.py
index 1c117e86..bd068653 100644
--- a/lightrag/api/lightrag_ollama.py
+++ b/lightrag/api/lightrag_ollama.py
@@ -684,7 +684,9 @@ def create_app(args):
         
         for prefix, mode in mode_map.items():
             if query.startswith(prefix):
-                return query[len(prefix):], mode
+                # 移除前缀后，清理开头的额外空格
+                cleaned_query = query[len(prefix):].lstrip()
+                return cleaned_query, mode
                 
         return query, SearchMode.hybrid