diff --git a/yt_dlp/extractor/niconico.py b/yt_dlp/extractor/niconico.py
index 4fcf1d8ed..ee888e9d3 100644
--- a/yt_dlp/extractor/niconico.py
+++ b/yt_dlp/extractor/niconico.py
@@ -675,16 +675,16 @@ def _entries(self, url, item_id, query=None, note='Downloading page %(page)s'):
             if not results:
                 break
 
+    def _search_results(self, query):
+        return self._entries(
+            self._proto_relative_url(f'//www.nicovideo.jp/search/{query}'), query)
+
 
 class NicovideoSearchIE(NicovideoSearchBaseIE, SearchInfoExtractor):
     IE_DESC = 'Nico video search'
     IE_NAME = 'nicovideo:search'
     _SEARCH_KEY = 'nicosearch'
 
-    def _search_results(self, query):
-        return self._entries(
-            self._proto_relative_url(f'//www.nicovideo.jp/search/{query}'), query)
-
 
 class NicovideoSearchURLIE(NicovideoSearchBaseIE):
     IE_NAME = f'{NicovideoSearchIE.IE_NAME}_url'