diff --git a/seahub/search/utils.py b/seahub/search/utils.py
index 9c08feea4c..1feadc4c18 100644
--- a/seahub/search/utils.py
+++ b/seahub/search/utils.py
@@ -14,12 +14,15 @@ from seahub.utils import get_user_repos
 from seahub.base.templatetags.seahub_tags import email2nickname, \
     email2contact_email
 from seahub.constants import REPO_TYPE_WIKI
+from seahub.utils import HAS_FILE_SEARCH
 
 import seaserv
 from seaserv import seafile_api
 
 os.environ['EVENTS_CONFIG_FILE'] = EVENTS_CONFIG_FILE
-from seafes import es_search, es_wiki_search
+
+if HAS_FILE_SEARCH:
+    from seafes import es_search, es_wiki_search
 
 # Get an instance of a logger
 logger = logging.getLogger(__name__)
diff --git a/seahub/utils/__init__.py b/seahub/utils/__init__.py
index 427465058f..a467403f0a 100644
--- a/seahub/utils/__init__.py
+++ b/seahub/utils/__init__.py
@@ -1248,6 +1248,8 @@ if EVENTS_CONFIG_FILE:
 
     HAS_FILE_SEARCH = check_search_enabled()
     HAS_FILE_SEASEARCH = check_seasearch_enabled()
+    if HAS_FILE_SEARCH and HAS_FILE_SEASEARCH:
+        raise Exception('ES and seasearch cannot be configured simultaneously.')
 
 # repo auto delete related
 ENABLE_REPO_AUTO_DEL = False